grizzled

US /ˈɡrɪz.əld/
UK /ˈɡrɪz.əld/
"grizzled" picture
1.

having or streaked with gray hair

:
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The old man had a long, grizzled beard.
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Her once dark hair was now completely grizzled.
:
grayhoarysilversalt-and-pepperstreaked with gray
2.

having a streaked or mottled appearance

:
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The old wolf had a grizzled coat, blending with the winter landscape.
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The ancient stone wall had a grizzled texture from years of weathering.
:
streakedmottledspeckleddappledbrindled