grisly | grizzly

(1) If it makes you feel revulsion, it is grisly,
(2) if it is grey-haired, it is grizzly.

Example -
You can feel grisly about becoming grizzly.

Etymology -

(1) The word grisly derives from the Old English grislic, terrifying.
(2) The word grizzly derives from the Old French gris, grey.

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