しらがまじり
grizzled; (hair) streaked with grey (gray)
Also written 白髪混じり、白髪まじり
No-adjective
彼女かのじょの髪かみは白髪しらがまじりだ。
Her hair is streaked with gray.
父ちちの髪かみは白髪交しらがまじりになった。
My father's hair has become streaked with gray.