difficult; hard; impossible; unfeasible; fussy; particular; gloomy
to look displeased; to frown; to scowl; to look grave; to look serious
hard to please; moody; crusty; fastidious
a little difficult; slightly hard; not feasible; not possible
slightly difficult; somewhat bothersome; troublesome; peevish; querulous
person who is hard to please; difficult person; grouch; sourpuss
person who is hard to please; grouch; complainer; whiner
difficult; hard; troublesome; complicated; serious (disease, problem, etc.)