Nonstandard or dialectal contraction of 'has not,' sometimes used informally instead of the standard 'hasn't.'
Modern dialectal contraction from 'has' (Old English 'hæfð,' third person singular of 'have') and 'not,' following the pattern of reduced contractions.
This word shows that English contraction rules are breaking down in real-time—speakers are experimenting with 'hasn,' 'couldn,' 'shouldn,' etc., even though these forms aren't standard, proving language is alive and changing.
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