Simple past tense and past participle of loose.(verb)
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Use "loosed" in a sentence
"Remarkable scenes — vistas of junk, vast motorways, toxic labor conditions, tribal vehicular gatherings, strange colors loosed from the earth, and the wholesale reordering of nature — so irrationalize our sense of what surrounds us that they can hardly be believed."
"It was April, and White Fang was a year old when he pulled into the home villages and was loosed from the harness by"
"Montyr jerked up his shield almost absently to catch an arrow loosed from a bowman atop the wall."