grouchy; ill-natured; irritable; churlish.

perverse; contrary; obstinate.

hard to understand; intricate and obscure.

difficult to read or decipher, as handwriting.

adjective

bad-tempered , cantankerous , cranky , cross , disagreeable , fretful , grouchy , grumpy , irascible , irritable , nasty , peevish , petulant , querulous , snappish , snappy , surly , testy , ugly , waspish