diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
index 9b950d2..5603b3f 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
@@ -147,8 +147,7 @@
     // proximityInfo and/or prevWordForBigrams may not be null.
     @Override
     public ArrayList<SuggestedWordInfo> getWords(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         final int count = getSuggestions(codes, prevWordForBigrams, proximityInfo, mOutputChars,
                 mScores, mSpaceIndices);
 
diff --git a/java/src/com/android/inputmethod/latin/Dictionary.java b/java/src/com/android/inputmethod/latin/Dictionary.java
index 55913b8..e999e5c 100644
--- a/java/src/com/android/inputmethod/latin/Dictionary.java
+++ b/java/src/com/android/inputmethod/latin/Dictionary.java
@@ -59,17 +59,15 @@
 
     /**
      * Searches for words in the dictionary that match the characters in the composer. Matched
-     * words are added through the callback object.
-     * @param composer the key sequence to match
+     * words are returned as an ArrayList.
+     * @param composer the key sequence to match with coordinate info, as a WordComposer
      * @param prevWordForBigrams the previous word, or null if none
-     * @param callback the callback object to send matched words to as possible candidates
      * @param proximityInfo the object for key proximity. May be ignored by some implementations.
      * @return the list of suggestions
      * @see WordCallback#addWord(char[], int, int, int, int, int)
      */
     abstract public ArrayList<SuggestedWordInfo> getWords(final WordComposer composer,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo);
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo);
 
     /**
      * Searches for pairs in the bigram dictionary that matches the previous word and all the
diff --git a/java/src/com/android/inputmethod/latin/DictionaryCollection.java b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
index 6b424f8..0a2f5aa 100644
--- a/java/src/com/android/inputmethod/latin/DictionaryCollection.java
+++ b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
@@ -53,19 +53,18 @@
 
     @Override
     public ArrayList<SuggestedWordInfo> getWords(final WordComposer composer,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         final CopyOnWriteArrayList<Dictionary> dictionaries = mDictionaries;
         if (dictionaries.isEmpty()) return null;
         // To avoid creating unnecessary objects, we get the list out of the first
         // dictionary and add the rest to it if not null, hence the get(0)
         ArrayList<SuggestedWordInfo> suggestions = dictionaries.get(0).getWords(composer,
-                prevWordForBigrams, callback, proximityInfo);
+                prevWordForBigrams, proximityInfo);
         if (null == suggestions) suggestions = new ArrayList<SuggestedWordInfo>();
         final int length = dictionaries.size();
         for (int i = 0; i < length; ++ i) {
             final ArrayList<SuggestedWordInfo> sugg = dictionaries.get(i).getWords(composer,
-                    prevWordForBigrams, callback, proximityInfo);
+                    prevWordForBigrams, proximityInfo);
             if (null != sugg) suggestions.addAll(sugg);
         }
         return suggestions;
diff --git a/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java b/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
index 732bc18..4cb4c14 100644
--- a/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
@@ -196,22 +196,19 @@
 
     @Override
     public ArrayList<SuggestedWordInfo> getWords(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         asyncReloadDictionaryIfRequired();
-        return getWordsInner(codes, prevWordForBigrams, callback, proximityInfo);
+        return getWordsInner(codes, prevWordForBigrams, proximityInfo);
     }
 
     protected final ArrayList<SuggestedWordInfo> getWordsInner(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         // Ensure that there are no concurrent calls to getWords. If there are, do nothing and
         // return.
         if (mLocalDictionaryController.tryLock()) {
             try {
                 if (mBinaryDictionary != null) {
-                    return mBinaryDictionary.getWords(codes, prevWordForBigrams, callback,
-                            proximityInfo);
+                    return mBinaryDictionary.getWords(codes, prevWordForBigrams, proximityInfo);
                 }
             } finally {
                 mLocalDictionaryController.unlock();
diff --git a/java/src/com/android/inputmethod/latin/ExpandableDictionary.java b/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
index e48e9e9..653fb76 100644
--- a/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
+++ b/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
@@ -249,8 +249,7 @@
 
     @Override
     public ArrayList<SuggestedWordInfo> getWords(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         synchronized (mUpdatingLock) {
             // If we need to update, start off a background task
             if (mRequiresReload) startDictionaryLoadingTaskLocked();
diff --git a/java/src/com/android/inputmethod/latin/Suggest.java b/java/src/com/android/inputmethod/latin/Suggest.java
index 1ae6557..29ecbe9 100644
--- a/java/src/com/android/inputmethod/latin/Suggest.java
+++ b/java/src/com/android/inputmethod/latin/Suggest.java
@@ -292,9 +292,8 @@
                     continue;
                 final int dicTypeId = sDictKeyToDictIndex.get(key);
                 final Dictionary dictionary = mUnigramDictionaries.get(key);
-                final ArrayList<SuggestedWordInfo> suggestions =
-                        dictionary.getWords(wordComposerForLookup, prevWordForBigram, this,
-                                proximityInfo);
+                final ArrayList<SuggestedWordInfo> suggestions = dictionary.getWords(
+                        wordComposerForLookup, prevWordForBigram, proximityInfo);
                 for (final SuggestedWordInfo suggestion : suggestions) {
                     final String suggestionStr = suggestion.mWord.toString();
                     oldAddWord(suggestionStr.toCharArray(), null, 0, suggestionStr.length(),
diff --git a/java/src/com/android/inputmethod/latin/SynchronouslyLoadedContactsBinaryDictionary.java b/java/src/com/android/inputmethod/latin/SynchronouslyLoadedContactsBinaryDictionary.java
index d706022..74f27e3 100644
--- a/java/src/com/android/inputmethod/latin/SynchronouslyLoadedContactsBinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/SynchronouslyLoadedContactsBinaryDictionary.java
@@ -33,10 +33,9 @@
 
     @Override
     public synchronized ArrayList<SuggestedWordInfo> getWords(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         syncReloadDictionaryIfRequired();
-        return getWordsInner(codes, prevWordForBigrams, callback, proximityInfo);
+        return getWordsInner(codes, prevWordForBigrams, proximityInfo);
     }
 
     @Override
diff --git a/java/src/com/android/inputmethod/latin/SynchronouslyLoadedUserBinaryDictionary.java b/java/src/com/android/inputmethod/latin/SynchronouslyLoadedUserBinaryDictionary.java
index 984e2e7..5b2a6ed 100644
--- a/java/src/com/android/inputmethod/latin/SynchronouslyLoadedUserBinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/SynchronouslyLoadedUserBinaryDictionary.java
@@ -36,10 +36,9 @@
 
     @Override
     public synchronized ArrayList<SuggestedWordInfo> getWords(final WordComposer codes,
-            final CharSequence prevWordForBigrams, final WordCallback callback,
-            final ProximityInfo proximityInfo) {
+            final CharSequence prevWordForBigrams, final ProximityInfo proximityInfo) {
         syncReloadDictionaryIfRequired();
-        return getWordsInner(codes, prevWordForBigrams, callback, proximityInfo);
+        return getWordsInner(codes, prevWordForBigrams, proximityInfo);
     }
 
     @Override