A dialectal or informal variant form of 'grin,' sometimes used in Scottish English or regional speech.
A regional or dialectal variant of 'grin,' possibly influenced by the pattern of other vowel-shifted verbs in Scots English (like 'grint' appearing in some historical texts as a past tense variant).
English dialects preserve really old word forms—'grint' might be a remnant of how people pronounced and conjugated 'grin' in earlier centuries, making it a linguistic time capsule!
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