Simple past tense and past participle of unharness.(verb)
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Use "unharnessed" in a sentence
"In November, the officers complained in a letter to Police Chief Jeffrey Baskoff that Melvin publicly humiliated them and subjected them to his "unharnessed" temper."
"Worse, consider if they had declared that song was dangerous, an unharnessed form of speech that acoustically shifted too much and led to the production of sound being too out of control, and possibly causing loss of speech and mind."
"If a child is placed in the stroller unharnessed, the tray and grab bar have a big enough gap under them to allow a child's torso, but not the child's head, to slip through."