diff --git a/nx/include/switch/applets/swkbd.h b/nx/include/switch/applets/swkbd.h
index 260598a6..e4970abe 100644
--- a/nx/include/switch/applets/swkbd.h
+++ b/nx/include/switch/applets/swkbd.h
@@ -132,6 +132,11 @@ typedef struct {
     u8 unk_x0[0x64];
 } SwkbdDictWord;
 
+/// Input data for SwkbdInline request SetCustomizeDic.
+typedef struct {
+    u8 unk_x0[0x70];
+} SwkbdCustomizeDicInfo;
+
 typedef struct {
     u32 unk_x0;
     u8 mode;            ///< See \ref SwkbdInlineMode.
@@ -196,10 +201,10 @@ typedef struct {
 
 /// Struct data for SwkbdInline Interactive reply storage ChangedString*, at the end following the string.
 typedef struct {
-    u32 stringLen;  ///< String length in characters, without NUL-terminator.
-    s32 unk_x4;
-    s32 unk_x8;
-    s32 cursorPos;  ///< Cursor position.
+    u32 stringLen;          ///< String length in characters, without NUL-terminator.
+    s32 dicStartCursorPos;  ///< Starting cursorPos for the current dictionary word in the current text string. -1 for none.
+    s32 dicEndCursorPos;    ///< Ending cursorPos for the current dictionary word in the current text string. -1 for none.
+    s32 cursorPos;          ///< Cursor position.
 } SwkbdChangedStringArg;
 
 /// Struct data for SwkbdInline Interactive reply storage MovedCursor*, at the end following the string.
@@ -243,6 +248,9 @@ typedef struct {
     bool directionalButtonAssignFlag;
     SwkbdState state;
 
+    bool dicCustomInitialized;
+    AppletStorage dicStorage;
+
     u8* interactive_tmpbuf;
     size_t interactive_tmpbuf_size;
     char* interactive_strbuf;
@@ -506,6 +514,25 @@ void swkbdInlineSetCursorPos(SwkbdInline* s, s32 pos);
  */
 void swkbdInlineSetUtf8Mode(SwkbdInline* s, bool flag);
 
+/**
+ * @brief Sets the CustomizeDic.
+ * @note Not avilable when \ref SwkbdState is above \ref SwkbdState_Initialized. Can't be used if this was already used previously.
+ * @note The specified buffer must not be used after this, until \ref swkbdInlineClose is used.
+ * @param s SwkbdInline object.
+ * @param buffer 0x1000-byte aligned buffer.
+ * @param size 0x1000-byte aligned buffer size.
+ * @param info Input \ref SwkbdCustomizeDicInfo
+ */
+Result swkbdInlineSetCustomizeDic(SwkbdInline* s, void* buffer, size_t size, SwkbdCustomizeDicInfo *info);
+
+/**
+ * @brief Request UnsetCustomizeDic.
+ * @note \ref swkbdInlineUpdate must be called at some point afterwards for this to take affect.
+ * @note Not avilable when \ref SwkbdState is above \ref SwkbdState_Initialized.
+ * @param s SwkbdInline object.
+ */
+void swkbdInlineUnsetCustomizeDic(SwkbdInline* s);
+
 /**
  * @brief Sets InputModeFadeType.
  * @note \ref swkbdInlineUpdate must be called at some point afterwards for this to take affect.
diff --git a/nx/source/applets/swkbd.c b/nx/source/applets/swkbd.c
index 82801071..728244dc 100644
--- a/nx/source/applets/swkbd.c
+++ b/nx/source/applets/swkbd.c
@@ -427,6 +427,10 @@ Result swkbdInlineClose(SwkbdInline* s) {
     s->interactive_strbuf = NULL;
     s->interactive_strbuf_size = 0;
 
+    appletStorageCloseTmem(&s->dicStorage);
+
+    memset(s, 0, sizeof(SwkbdInline));
+
     return rc;
 }
 
@@ -685,6 +689,27 @@ void swkbdInlineSetUtf8Mode(SwkbdInline* s, bool flag) {
     _swkbdInlineSetBoolFlag(s, &s->calcArg.utf8Mode, flag, 0x20);
 }
 
+Result swkbdInlineSetCustomizeDic(SwkbdInline* s, void* buffer, size_t size, SwkbdCustomizeDicInfo *info) {
+    Result rc=0;
+
+    if (s->state > SwkbdState_Initialized || s->dicCustomInitialized) return MAKERESULT(Module_Libnx, LibnxError_AlreadyInitialized);
+
+    rc = appletCreateHandleStorageTmem(&s->dicStorage, buffer, size);
+    if (R_FAILED(rc)) return rc;
+    s->dicCustomInitialized = true;
+    rc = appletHolderPushInteractiveInData(&s->holder, &s->dicStorage);
+    if (R_FAILED(rc)) return rc;
+
+    rc = _swkbdSendRequest(s, SwkbdRequestCommand_SetCustomizeDic, info, sizeof(SwkbdCustomizeDicInfo));
+
+    return rc;
+}
+
+void swkbdInlineUnsetCustomizeDic(SwkbdInline* s) {
+    if (s->state > SwkbdState_Initialized || !s->dicCustomInitialized) return;
+    s->calcArg.flags |= 0x40;
+}
+
 void swkbdInlineSetInputModeFadeType(SwkbdInline* s, u8 type) {
     if (s->calcArg.inputModeFadeType == type) return;
     s->calcArg.inputModeFadeType = type;