01 adj. Terrifying, as if in a nightmare{2}; resembling a nightmare{2}.
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1.
Terrifying, as if in a nightmare{2}; resembling a nightmare{2}.
Syn.
bloodcurdling, hair-raising.
Entry
1 sense
Webster, 1913
nightmarish
· IPA /nˈaɪtmˌɛrɪʃ/