痛苦 Traditional form: 痛苦 Pinyin (reading): tòngkǔ Definitions: pain suffering painful CL:個/个 (gè) Characters: 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly 苦 - bitter; hardship, suffering Traditional characters: 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly 苦 - bitter; hardship, suffering