Someone who has or possesses things; a person who owns property or goods.
From Old English 'habban' (to have) plus agent suffix '-er'. Originally referred to anyone who possessed something, but in Scottish and Northern English dialects came to mean 'a person of means' or 'a farmer.'
In Scottish, 'haver' took on the meaning of someone who talks nonsense or 'havers'—so the word that meant 'someone who has things' somehow evolved to mean 'someone full of hot air' instead.
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