diff --git a/docs/api/corpus.rst b/docs/api/corpus.rst
index ddb81e8f6..8f5a98188 100644
--- a/docs/api/corpus.rst
+++ b/docs/api/corpus.rst
@@ -12,6 +12,11 @@ countries
 .. autofunction:: countries
    :noindex:
 
+find_synonym
+~~~~~~~~~~~~
+.. autofunction:: find_synonym
+   :noindex:
+
 get_corpus
 ~~~~~~~~~~
 .. autofunction:: get_corpus
diff --git a/pythainlp/corpus/__init__.py b/pythainlp/corpus/__init__.py
index 7fff98d85..d5e8ea39b 100644
--- a/pythainlp/corpus/__init__.py
+++ b/pythainlp/corpus/__init__.py
@@ -14,6 +14,7 @@
     "corpus_path",
     "countries",
     "download",
+    "find_synonyms",
     "get_corpus",
     "get_corpus_as_is",
     "get_corpus_db",
@@ -101,6 +102,7 @@ def corpus_db_path() -> str:
 )  # these imports must come before other pythainlp.corpus.* imports
 from pythainlp.corpus.common import (
     countries,
+    find_synonyms,
     provinces,
     thai_dict,
     thai_family_names,
diff --git a/pythainlp/corpus/common.py b/pythainlp/corpus/common.py
index 36a8c718c..985811817 100644
--- a/pythainlp/corpus/common.py
+++ b/pythainlp/corpus/common.py
@@ -1,12 +1,14 @@
 # -*- coding: utf-8 -*-
 # SPDX-FileCopyrightText: Copyright 2016-2023 PyThaiNLP Project
 # SPDX-License-Identifier: Apache-2.0
+
 """
 Common lists of words.
 """
 
 __all__ = [
     "countries",
+    "find_synonyms",
     "provinces",
     "thai_family_names",
     "thai_female_names",
@@ -336,3 +338,38 @@ def thai_synonyms() -> dict:
 def thai_synonym() -> dict:
     warnings.warn("Deprecated: Use thai_synonyms() instead.", DeprecationWarning)
     return thai_synonyms()
+
+
+def find_synonyms(word: str) -> List[str]:
+    """
+    Find synonyms
+
+    :param str word: Thai word
+    :return: List of synonyms of the input word or an empty list if it isn't exist.
+    :rtype: List[str]
+
+    :Example:
+    ::
+
+        from pythainlp.corpus import find_synonyms
+
+        print(find_synonyms("หมู"))
+        # output: ['จรุก', 'วราหะ', 'วราห์', 'ศูกร', 'สุกร']
+    """
+    synonyms = thai_synonyms()  # get a dictionary of {word, synonym}
+    list_synonym = []
+
+    if word in synonyms["word"]:  # find by word
+        list_synonym.extend(synonyms["synonym"][synonyms["word"].index(word)])
+
+    for idx, words in enumerate(synonyms["synonym"]):  # find by synonym
+        if word in words:
+            list_synonym.extend(synonyms["synonym"][idx])
+            list_synonym.append(synonyms["word"][idx])
+
+    list_synonym = sorted(list(set(list_synonym)))
+
+    if word in list_synonym:  # remove same word
+        list_synonym.remove(word)
+
+    return list_synonym
diff --git a/tests/test_corpus.py b/tests/test_corpus.py
index 01c0c77ef..5a0ece6f3 100644
--- a/tests/test_corpus.py
+++ b/tests/test_corpus.py
@@ -13,6 +13,7 @@
     conceptnet,
     countries,
     download,
+    find_synonyms,
     get_corpus_db,
     get_corpus_db_detail,
     get_corpus_default_db,
@@ -204,3 +205,10 @@ def test_zip(self):
         p = get_corpus_path("test_zip")
         self.assertEqual(os.path.isdir(p), True)
         self.assertEqual(remove("test_zip"), True)
+
+    def test_find_synonyms(self):
+        self.assertEqual(
+            find_synonyms("หมู"),
+            ['จรุก', 'วราหะ', 'วราห์', 'ศูกร', 'สุกร']
+        )
+        self.assertEqual(find_synonyms("1"), [])