IPA: //ʌnˈswɔrn//
KK: /ʌnˈswɔrn/
Not having taken an oath or made a formal promise.
The witness provided an unsworn statement to the court.
Unsworn → It is formed from "un-" (meaning not) and "sworn" (from Old English "sweorn", meaning to take an oath). The word "unsworn" means not having taken an oath or not being bound by an oath.
Think of 'not' ('un-') having taken an 'oath' ('sworn') — that's why unsworn means not bound by an oath.