酸葡萄 Traditional form: 酸葡萄 Pinyin (reading): suānpútao Definitions: sour grapes Characters: 酸 - tart, sour; spoiled; acid 葡 - grapes; Portugal, Portuguese 萄 - grapes Traditional characters: 酸 - tart, sour; spoiled; acid 葡 - grapes; Portugal, Portuguese 萄 - grapes