diff --git a/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/SubLMs/lmUserOverride.swift b/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/SubLMs/lmUserOverride.swift
index 33afe642..28fefc51 100644
--- a/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/SubLMs/lmUserOverride.swift
+++ b/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/SubLMs/lmUserOverride.swift
@@ -151,9 +151,19 @@ extension vChewingLM.LMUserOverride {
   }
 }
 
-// MARK: - Hash and Dehash the entire UOM data
+// MARK: - Hash and Dehash the entire UOM data, etc.
 
 extension vChewingLM.LMUserOverride {
+  public func bleachSpecifiedSuggestions(target: String, saveCallback: @escaping () -> Void) {
+    for neta in mutLRUMap {
+      if neta.value.observation.overrides.keys.contains(target) {
+        mutLRUMap.removeValue(forKey: neta.key)
+      }
+    }
+    resetMRUList()
+    saveCallback()
+  }
+
   /// 自 LRU 辭典內移除所有的單元圖。
   public func bleachUnigrams(saveCallback: @escaping () -> Void) {
     for key in mutLRUMap.keys {
diff --git a/Source/Modules/LMMgr.swift b/Source/Modules/LMMgr.swift
index 426818c2..fb244910 100644
--- a/Source/Modules/LMMgr.swift
+++ b/Source/Modules/LMMgr.swift
@@ -610,6 +610,17 @@ public enum LMMgr {
     group.notify(queue: DispatchQueue.main) {}
   }
 
+  public static func bleachSpecifiedSuggestions(target: String, mode: Shared.InputMode) {
+    switch mode {
+      case .imeModeCHS:
+        Self.uomCHT.bleachSpecifiedSuggestions(target: target, saveCallback: { Self.uomCHT.saveData() })
+      case .imeModeCHT:
+        Self.uomCHS.bleachSpecifiedSuggestions(target: target, saveCallback: { Self.uomCHS.saveData() })
+      case .imeModeNULL:
+        break
+    }
+  }
+
   public static func removeUnigramsFromUserOverrideModel(_ mode: Shared.InputMode) {
     switch mode {
       case .imeModeCHS:
diff --git a/Source/Modules/SessionCtl_Delegates.swift b/Source/Modules/SessionCtl_Delegates.swift
index 05df8620..722994f3 100644
--- a/Source/Modules/SessionCtl_Delegates.swift
+++ b/Source/Modules/SessionCtl_Delegates.swift
@@ -39,6 +39,13 @@ extension SessionCtl: KeyHandlerDelegate {
     {
       return false
     }
+    // 開始針對使用者半衰模組的清詞處理
+    let rawPair = state.data.userPhraseKVPair
+    let valueCurrent = rawPair.1
+    let valueReversed = ChineseConverter.crossConvert(rawPair.1)
+    LMMgr.bleachSpecifiedSuggestions(target: valueCurrent, mode: IMEApp.currentInputMode)
+    LMMgr.bleachSpecifiedSuggestions(target: valueReversed, mode: IMEApp.currentInputMode.reversed)
+    // 清詞完畢
     return true
   }
 }