To embarrass; to puzzle; to distract; to bewilder; to confuse; to trouble with ambiguity, suspense, or anxiety.

To plague; to vex; to tormen.

be a mystery or bewildering to; "This beats me!"; "Got me--I don't know the answer!"; "a vexing problem"; "This question really stuck me"

To involve; to entangle; to make intricate or complicated, and difficult to be unraveled or understood; as, to perplex one with doubts.

make more complicated; "There was a new development that complicated the matter"