1. (a.) Having the nature of crust; pertaining to a hard covering; as, a crusty coat; a crusty surface or substance.

2. (a.) Having a hard exterior, or a short, rough manner, though kind at heart; snappish; peevish; surly.

abrupt aggressive backed barnyard bearish beastly biggety bitchy bluff blunt brash brief brusque calcified callous calloused cankered cantankerous case-hardened cavalier cheeky choleric churlish chutzpadik coarse cocky contemptuous crabbed cranky cross cross-grained crusted crystallized curt cussed derisive dirty disagreeable disrespectful dour excitable facy feisty filthy flip flippant fossilized foul fractious fresh gally granulated gratuitous gross gruff hardened harsh hornified huffish huffy impertinent impudent incrusted indurate indurated irascible irritable lapidified malapert mean nervy ornery ossified pert perverse petrified rank raunchy reinforced rigidified rough rude sassy saturnine saucy sclerotic set severe sharp short smart smart-alecky smart-ass snappish snippety snippy solidified spiteful spleeny splenetic steeled stiffened strengthened surly testy toughened truculent ugly uncalled-for vitrified waspish wise-ass