Having gray hairs mixed with darker hair; showing signs of age through graying hair; variant or archaic spelling of grizzled.
From gris (gray) with -led or -led suffix indicating a state or appearance. Related to grizzled, showing the same meaning through variant spelling.
This spelling shows English at a moment of transition—'grisled' and 'grizzled' existed side-by-side as people standardized spelling, and you can see the wrestling with how to show graying.
Complete word intelligence in one call. Free tier — 50 lookups/day.