IPA: /ʌnˈhɑːrnəs/
KK: /ʌnˈhɑrnəs/
To take off or remove a harness or similar equipment from someone or something, allowing them to be free or unrestrained.
The trainer decided to unharness the dog after the race was over.
Past: unharnessed
Past Participle: unharnessed
Unharness → It is formed from "un-" (meaning not or to reverse) and "harness" (from Old English *hyrnes*, meaning to equip or put in harness). The word "unharness" means to remove the harness or to free from being equipped or restrained.
Think of 'removing' ('un-') the 'equipment' ('harness') that holds something back — that's why unharness means to free from restraint.