聪明 (cōngming): Clever, intelligent, smart.
聪 (cōng): From the ear radical (耳), this character originally meant “sharp of hearing,” implying an ability to listen and understand quickly.
明 (míng): Composed of the sun (日) and moon (月), it means “bright” or “clear,” implying clear-sightedness and understanding.
反 (fǎn): In reverse, on the contrary, to turn against.
被 (bèi): A particle indicating the passive voice, similar to “by” in “foiled by…”.
误 (wù): To make a mistake, to harm, to miss (an opportunity).
Combining them, the phrase literally reads: “Cleverness (聪明) is, on the contrary (反), harmed (误) by (被) cleverness (聪明).” The cleverness itself becomes the agent of the person's failure.