CRUSTY Meaning of CRUSTY in English a. Touchy, testy, pettish, waspish, snappish, peevish, fretful, petulant, churlish, crabbed, froward, surly, morose, cynical, snarling, ill-tempered. See cross . Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012