To treat someone with excessive care and attention; to pamper or indulge someone.
From Middle English cosset, possibly from Old English 'cot-sæt' (one who sits by the cottage). Originally referred to a pet lamb raised by hand, then extended to mean pampering any creature.
The original meaning was literally a lamb raised in the house instead of with the flock—so when we 'cosset' someone, we're comparing them to a spoiled house pet getting attention while wild animals fend for themselves.
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