CRUSTIEST
CRUSTY
crusty, curmudgeonly, gruff, ill-humored, ill-humoured
(adjective) brusque and surly and forbidding; “crusty remarks”; “a crusty old man”; “his curmudgeonly temper”; “gruff manner”; “a gruff reply”
crusted, encrusted, crusty, crustlike
(adjective) having a hardened crust as a covering
Source: WordNet® 3.1
Adjective
crustiest
superlative form of crusty: most crusty
Source: Wiktionary
CRUSTY
Crust"y (-), a.
1. Having the nature of crust; pertaining to a hard covering; as, a
crusty coat; a crusty surface or substance.
2. Etym: [Possibly a corruption of cursty. Cf. Curst, Curstness.]
Definition: Having a hard exterior, or a short, rough manner, though kind
at heart; snappish; peevish; surly.
Thou crusty batch of nature, what's the news Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition