Meanings
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1
verb
to release or unleash something that has been restrained or suppressed
The speaker's accusation unloosed a tempest of protest in the hall.
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2
verb
to loosen, untie, or unfasten something
She unloosed the rope that held the gate shut.
Thesaurus
Etymology
From Middle English unlosen, formed with the intensifying prefix un- and losen ("to free, loosen, or untie"), the ancestor of loose. The base is related to Old Norse lauss ("loose, free") and ultimately to a Proto-Indo-European root meaning "separate or set free." Here un- intensifies rather than reverses the action.