Answer: confound

AnswerCrossword Clue
CONFOUNDCircumvent.
CONFOUNDConfuse or perplex
CONFOUNDBaffle
CONFOUNDBewilder
confoundDefeat (a plan, aim, or hope)
confoundMix up (something) with something else so that the individual elements become difficult to distinguish
confoundOverthrow (an enemy)
confoundProve (a theory, expectation, or prediction) wrong
confoundCause surprise or confusion in (someone), esp. by acting against their expectations