diff --git a/src/index.js b/src/index.js
index cf38ddc..9743a8f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -390,6 +390,22 @@ var LeoProfanity = {
 
     return this;
   },
+
+  /**
+   * Remove dictionary
+   *
+   * @example
+   * // remove dictionary
+   * filter.removeDictionary('th')
+   *
+   * @public
+   * @param {string} name dictionary name
+   */
+   removeDictionary: function (name) {
+    delete this.wordDictionary[name]
+
+    return this;
+  },
 };
 
 if (typeof module !== 'undefined' && module.exports != null) {
diff --git a/test/index.spec.js b/test/index.spec.js
index 914eccd..81defcc 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -323,3 +323,27 @@ describe('addDictionary', function () {
     expect(filter.list().length).to.equal(words.length);
   });
 });
+
+describe('removeDictionary', function () {
+  it('should remove existing dictionary', function () {
+    var name = 'fr';
+    filter.loadDictionary(name);
+    expect(filter.list().length).to.not.equal(0);
+
+    filter.removeDictionary(name);
+
+    expect(name in filter.wordDictionary).to.be.false;
+  });
+
+  it('should remove new dictionary', function () {
+    filter.loadDictionary()
+    var name = 'th'
+    var words = ['หนึ่ง', 'สอง', 'สาม', 'สี่', 'ห้า']
+    filter.addDictionary(name, words);
+    expect(filter.list().length).to.equal(words.length);
+
+    filter.removeDictionary(name);
+
+    expect(name in filter.wordDictionary).to.be.false;
+  });
+});