verb

Puzzle, confuse, or bewilder (someone)

he was bemused by what was happening

bewildered,confused,puzzled,perplexed,baffled,stumped,mystified,stupefied,nonplussed,muddled,befuddled,fuddled,dumbfounded,at sea,at a loss,at sixes and sevens,thrown,thrown off balance,taken aback,disoriented,disconcerted,discomposed,troubled,discomfited,unnerved,shaken,shaken up,dazed,stunned,astonished,astounded