nonplussed
动词 nonplus:
be a mystery or bewildering to
同义词:perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, amaze, dumbfound
形容词 nonplussed:
filled with bewilderment
同义词:at a loss, nonplused, puzzled