動詞 perplex:

1. be a mystery or bewildering to
   同義詞：perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel, amaze, dumbfound
2. make more complicated
   同義詞：complicate, perplex

形容詞 perplexing:

1. lacking clarity of meaning; causing confusion or perplexity
   同義詞：confusing, puzzling

1. An awkward or perplexing situation; a predicament.
   困境令人難堪或困窘的形勢; 窘境
2. The whole affair is very perplexing.
   整件事令人感到莫名其妙。