无痛 Traditional form: 無痛 Pinyin (reading): wútòng Definitions: painless; pain-free Characters: 无 - no, not; lacking, -less 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly Traditional characters: 無 - no, not; lacking, -less 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly