diff --git a/xwords4/android/XWords4/res/layout/lookup.xml b/xwords4/android/XWords4/res/layout/lookup.xml
index c3ae2eb36..ba5c89b13 100644
--- a/xwords4/android/XWords4/res/layout/lookup.xml
+++ b/xwords4/android/XWords4/res/layout/lookup.xml
@@ -19,6 +19,10 @@
             android:layout_weight="1"
             />
 
+  <Button android:id="@+id/button_study"
+          android:layout_width="fill_parent" 
+          android:layout_height="wrap_content"
+          />
   <Button android:id="@+id/button_done"
           android:layout_width="fill_parent" 
           android:layout_height="wrap_content"
diff --git a/xwords4/android/XWords4/res/values/common_rsrc.xml b/xwords4/android/XWords4/res/values/common_rsrc.xml
index 58b4c5fff..aa2382d0e 100644
--- a/xwords4/android/XWords4/res/values/common_rsrc.xml
+++ b/xwords4/android/XWords4/res/values/common_rsrc.xml
@@ -58,6 +58,7 @@
   <string name="key_enable_sms">key_enable_sms</string>
   <string name="key_keep_screenon">key_keep_screenon</string>
   <string name="key_thumbsize">key_thumbsize3</string>
+  <string name="key_studyon">key_studyon</string>
 
   <string name="key_summary_field">key_summary_field</string>
   <string name="key_default_loc">key_default_loc</string>
diff --git a/xwords4/android/XWords4/res/values/strings.xml b/xwords4/android/XWords4/res/values/strings.xml
index fd3595e40..6b62b02f5 100644
--- a/xwords4/android/XWords4/res/values/strings.xml
+++ b/xwords4/android/XWords4/res/values/strings.xml
@@ -1788,10 +1788,13 @@
     <!-- New strings that need to be documented and found a home
          above. -->
     <string name="button_lookup">Look up words</string>
+    <string name="button_lookup_study">Look up/study words</string>
       <!--  -->
     <string name="button_lookupf">Look up %s</string>
+    <string name="button_lookup_studyf">Look up/study %s</string>
       <!--  -->
     <string name="title_lookup">Tap to look up</string>
+    <string name="title_lookup_study">Tap to look up or study</string>
       <!--  -->
     <string name="button_done">Done</string>
       <!--  -->
@@ -2200,4 +2203,10 @@
 
     <string name="menu_rateme">Rate Crosswords</string>
     <string name="no_market">Google Play app not found</string>
+
+    <string name="add_to_studyf">Add %s to study list</string>
+    <string name="title_studyon">Enable study lists</string>
+    <string name="summary_studyon">Offer to add to and display lists
+    of words to remember</string>
+    
 </resources>
diff --git a/xwords4/android/XWords4/res/xml/xwprefs.xml b/xwords4/android/XWords4/res/xml/xwprefs.xml
index e6ad3a3e9..f78171828 100644
--- a/xwords4/android/XWords4/res/xml/xwprefs.xml
+++ b/xwords4/android/XWords4/res/xml/xwprefs.xml
@@ -246,6 +246,11 @@
                         android:summary="@string/summary_sort_tiles"
                         android:defaultValue="true"
                         />
+    <CheckBoxPreference android:key="@string/key_studyon"
+                        android:title="@string/title_studyon"
+                        android:summary="@string/summary_studyon"
+                        android:defaultValue="false"
+                        />
     <CheckBoxPreference android:key="@string/key_ringer_zoom"
                         android:title="@string/ringer_zoom"
                         android:summary="@string/ringer_zoom_summary"
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
index 586d31d8d..b3e84514f 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java
@@ -393,12 +393,16 @@ public class BoardActivity extends XWActivity
                 } else if ( DLG_SCORES_BLK == id ) {
                     if ( null != m_words && m_words.length > 0 ) {
                         String buttonTxt;
+                        boolean studyOn = XWPrefs.getStudyEnabled( this );
                         if ( m_words.length == 1 ) {
-                            buttonTxt = Utils.format( this, 
-                                                      R.string.button_lookupf,
-                                                      m_words[0] );
+                            int resID = studyOn 
+                                ? R.string.button_lookup_studyf
+                                : R.string.button_lookupf;
+                            buttonTxt = Utils.format( this, resID, m_words[0] );
                         } else {
-                            buttonTxt = getString( R.string.button_lookup );
+                            int resID = studyOn ? R.string.button_lookup_study
+                                : R.string.button_lookup;
+                            buttonTxt = getString( resID );
                         }
                         lstnr = new DialogInterface.OnClickListener() {
                                 public void onClick( DialogInterface dialog, 
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBHelper.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBHelper.java
index 55ecae067..b7ecc0b5d 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBHelper.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBHelper.java
@@ -36,8 +36,9 @@ public class DBHelper extends SQLiteOpenHelper {
     public static final String TABLE_NAME_DICTBROWSE = "dictbrowse";
     public static final String TABLE_NAME_DICTINFO = "dictinfo";
     public static final String TABLE_NAME_GROUPS = "groups";
+    public static final String TABLE_NAME_STUDYLIST = "study";
     private static final String DB_NAME = "xwdb";
-    private static final int DB_VERSION = 18;
+    private static final int DB_VERSION = 19;
 
     public static final String GAME_NAME = "GAME_NAME";
     public static final String VISID = "VISID";
@@ -87,6 +88,9 @@ public class DBHelper extends SQLiteOpenHelper {
     public static final String GROUPNAME = "GROUPNAME";
     public static final String EXPANDED = "EXPANDED";
 
+    public static final String WORD = "WORD";
+    public static final String LANGUAGE = "LANGUAGE";
+
     private Context m_context;
 
     private static final String[][] s_summaryColsAndTypes = {
@@ -153,6 +157,12 @@ public class DBHelper extends SQLiteOpenHelper {
         ,{ EXPANDED,  "INTEGER(1)" }
     };
 
+    private static final String[][] s_studySchema = {
+        { WORD,  "TEXT" }
+        ,{ LANGUAGE,  "INTEGER(1)" }
+        ,{ "UNIQUE", "(" + WORD + ", " + LANGUAGE + ")" }
+    };
+
     public DBHelper( Context context )
     {
         super( context, DB_NAME, null, DB_VERSION );
@@ -173,6 +183,7 @@ public class DBHelper extends SQLiteOpenHelper {
         createTable( db, TABLE_NAME_DICTBROWSE, s_dictBrowseColsAndTypes );
         forceRowidHigh( db, TABLE_NAME_SUM );
         createGroupsTable( db );
+        createStudyTable( db );
     }
 
     @Override
@@ -217,6 +228,9 @@ public class DBHelper extends SQLiteOpenHelper {
             addSumColumn( db, THUMBNAIL );
             // nothing yet
             break;
+        case 18:
+            createStudyTable( db );
+            break;
         default:
             db.execSQL( "DROP TABLE " + TABLE_NAME_SUM + ";" );
             if ( oldVersion >= 6 ) {
@@ -278,6 +292,11 @@ public class DBHelper extends SQLiteOpenHelper {
         XWPrefs.setDefaultNewGameGroup( m_context, newGroup );
     }
 
+    private void createStudyTable( SQLiteDatabase db )
+    {
+        createTable( db, TABLE_NAME_STUDYLIST, s_studySchema );
+    }
+
     // Move all existing games to the row previously named "cur games'
     private void moveToCurGames( SQLiteDatabase db )
     {
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java
index 538f386d0..8eb883d7f 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java
@@ -1565,6 +1565,21 @@ public class DBUtils {
         return colNames;
     }
 
+    public static void addToStudyList( Context context, String word,
+                                       int lang )
+    {
+        ContentValues values = new ContentValues();
+        values.put( DBHelper.WORD, word );
+        values.put( DBHelper.LANGUAGE, lang );
+
+        initDB( context );
+        synchronized( s_dbHelper ) {
+            SQLiteDatabase db = s_dbHelper.getWritableDatabase();
+            db.insert( DBHelper.TABLE_NAME_STUDYLIST, null, values );
+            db.close();
+        }
+    }
+
     private static void copyGameDB( Context context, boolean toSDCard )
     {
         String name = DBHelper.getDBName();
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/LookupActivity.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/LookupActivity.java
index 6275ffd27..2e909cd50 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/LookupActivity.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/LookupActivity.java
@@ -41,7 +41,7 @@ public class LookupActivity extends XWListActivity
 
     public static final String WORDS = "WORDS";
     public static final String LANG = "LANG";
-    public static final String FORCELIST = "FORCELIST";
+    private static final String FORCELIST = "FORCELIST";
     private static final String STATE = "STATE";
     private static final String WORDINDEX = "WORDINDEX";
     private static final String URLINDEX = "URLINDEX";
@@ -62,11 +62,13 @@ public class LookupActivity extends XWListActivity
 
     private String[] m_words;
     private boolean m_forceList;
+    private boolean m_studyOn;
     private int m_wordIndex = 0;
     private int m_urlIndex = 0;
     private int m_state;
     private ArrayAdapter<String> m_wordsAdapter;
     private Button m_doneButton;
+    private Button m_studyButton;
     private TextView m_summary;
 
     @Override
@@ -80,6 +82,7 @@ public class LookupActivity extends XWListActivity
         m_words = intent.getStringArrayExtra( WORDS );
         setLang( intent.getIntExtra( LANG, -1 ) );
         m_forceList = intent.getBooleanExtra( FORCELIST, false );
+        m_studyOn = XWPrefs.getStudyEnabled( this );
 
         m_state = STATE_DONE;
         adjustState( 1 );
@@ -90,6 +93,12 @@ public class LookupActivity extends XWListActivity
 
         m_doneButton = (Button)findViewById( R.id.button_done );
         m_doneButton.setOnClickListener( this );
+        m_studyButton = (Button)findViewById( R.id.button_study );
+        if ( m_studyOn ) {
+            m_studyButton.setOnClickListener( this );
+        } else {
+            m_studyButton.setVisibility( View.GONE );
+        }
 
         m_summary = (TextView)findViewById( R.id.summary );
 
@@ -120,7 +129,11 @@ public class LookupActivity extends XWListActivity
     /* View.OnClickListener -- just the Done button */
     public void onClick( View view ) 
     {
-        switchState( -1 );
+        if ( view == m_doneButton ) {
+            switchState( -1 );
+        } else if ( view == m_studyButton ) {
+            addToList( m_words[m_wordIndex] );
+        }
     }
 
     /* AdapterView.OnItemClickListener */
@@ -146,7 +159,7 @@ public class LookupActivity extends XWListActivity
                 m_state += incr;
             }
             if ( STATE_URLS == m_state &&
-                ( 1 >= s_lookupUrls.length && !m_forceList ) ) {
+                ( 1 >= s_lookupUrls.length && !m_forceList && !m_studyOn ) ) {
                 m_state += incr;
             }
             if ( m_state == curState ) {
@@ -169,8 +182,10 @@ public class LookupActivity extends XWListActivity
             break;
         case STATE_WORDS:
             getListView().setAdapter( m_wordsAdapter );
-            setSummary( R.string.title_lookup );
+            setSummary( m_studyOn ? 
+                        R.string.title_lookup_study : R.string.title_lookup );
             m_doneButton.setText( R.string.button_done );
+            m_studyButton.setVisibility( View.GONE );
             break;
         case STATE_URLS:
             getListView().setAdapter( s_urlsAdapter );
@@ -178,6 +193,10 @@ public class LookupActivity extends XWListActivity
             String txt = Utils.format( this, R.string.button_donef,
                                        m_words[m_wordIndex] );
             m_doneButton.setText( txt );
+            txt = Utils.format( this, R.string.add_to_studyf,
+                                m_words[m_wordIndex] );
+            m_studyButton.setVisibility( View.VISIBLE );
+            m_studyButton.setText( txt );
             break;
         case STATE_LOOKUP:
             lookupWord( m_words[m_wordIndex], s_lookupUrls[m_urlIndex] );
@@ -244,4 +263,11 @@ public class LookupActivity extends XWListActivity
         String title = Utils.format( this, R.string.pick_url_titlef, word );
         m_summary.setText( title );
     }
+
+    private void addToList( String word )
+    {
+        String msg = String.format("Wants to study %s", word );
+        Utils.showToast( this, msg );
+        DBUtils.addToStudyList( this, word, s_lang );
+    }
 }
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/XWPrefs.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/XWPrefs.java
index fe72baf9d..8242ab959 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/XWPrefs.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/XWPrefs.java
@@ -370,6 +370,11 @@ public class XWPrefs {
         return result;
     }
 
+    public static boolean getStudyEnabled( Context context )
+    {
+        return getPrefsBoolean( context, R.string.key_studyon, false );
+    }
+
     protected static String getPrefsString( Context context, int keyID )
     {
         String key = context.getString( keyID );
@@ -424,4 +429,4 @@ public class XWPrefs {
     {
         setPrefsString( context, keyID, TextUtils.join( "\n", value ) );
     }
-}
\ No newline at end of file
+}