grizzled adj.

"gray-colored," mid-14c., from Old French grisel "gray" (see grizzled) which also meant "gray-haired old man; gray horse" (senses recorded in Middle English from mid-14c.). The verb, "to make gray," is attested from 1740.

"of a color between white and black; having little or no color or luminosity," Old English græg "gray" (Mercian grei), from Proto-Germanic *grewa- "gray" (source also of Old Norse grar, Old Frisian gre, Middle Dutch gra, Dutch graw, Old High German grao, German grau), with no certain connections outside Germanic. French gris, Spanish gris, Italian grigio, Medieval Latin griseus are Germanic loan-words. The spelling distinction between British grey and U.S. gray developed 20c. Expression the gray mare is the better horse in reference to households ruled by wives is recorded from 1540s.

"somewhat gray," 1590s, from grizzle "gray-colored" + -y (1). Also see grizzled. Grizzly bear (ursus horribilis) for the large ferocious bear of the western U.S., is recorded by 1806; sometimes said to belong rather to grisly (q.v.), but either adjective suits it.