Answer: baffling

AnswerCrossword Clue
BAFFLINGCausing face scrunching, maybe
BAFFLINGMystifying indeed.
BAFFLINGElusive.
BAFFLINGPerplexing
bafflingBAFFLE, to confound (to confuse (to perplex (to puzzle)))
bafflingto frustrate
bafflingobstruction
bafflingto bewilder