We found one dictionary that defines the word scare stiff:

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1. scare stiff: Idioms

▸ Words similar to scare stiff ▸ Usage examples for scare stiff ▸ Idioms related to scare stiff ▸ Wikipedia articles (New!) ▸ Words that often appear near scare stiff ▸ Rhymes of scare stiff ▸ Invented words related to scare stiff