expression
Colloquial, emphatic variant of 怖い (こわい). Used in casual speech to express fear or creepiness, often with a drawn-out vowel for emphasis.
See also: 怖い
あの話、こええよ。
That story is scary.
夜の森はこえーから行きたくない。
The forest at night is creepy, so I don't want to go.
Colloquial variant of 怖い (こわい), with the /w/ dropped and the vowel lengthened for emphasis. The exact derivation is uncertain, but it is a common casual transformation.