以为 Traditional form: 以為 Pinyin (reading): yǐwéi Definitions: to think; to believe (often with the implication that the belief is mistaken – unless referring to one's own current belief) Characters: 以 - according to; so as to; because of; then 为 - to do, to act; to handle, to govern; to be Traditional characters: 以 - according to; so as to; because of; then 為 - to do, to act; to handle, to govern; to be