say it: KRUH-stee
crusty is an adjective meaning "having a hardened crust as a covering". It carries 2 recorded senses.
brusque and surly and forbidding
“crusty remarks”
“a crusty old man”
“his curmudgeonly temper”
“gruff manner”
“a gruff reply”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for crusty come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.