Simple past tense and past participle of unloose.(verb)
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Use "unloosed" in a sentence
"But thy word unloosed me, and the curse said over Andvari's ring has sent me here."
"The one word unloosed the spell which had kept Cigarette speechless; the one word was an insult beyond endurance, that lashed all the worst spirit in her into flame."
"I just find this massive money power unloosed in judicial elections to be truly frightening."