IPA: //ʌnˈʃeɪvən//
KK: /ʌnˈʃeɪvən/
Not having removed facial hair, typically resulting in a rough or unkempt appearance.
He looked unshaven after skipping his morning routine.
Unshaven → It is formed from "un-" (meaning not) and "shaven" (the past participle of "shave", which comes from Old English "sceafan", meaning to cut off hair). The word "unshaven" means not having been shaved or having hair that has not been cut off.
Think of 'not' ('un-') having 'cut off hair' ('shave') — that's why unshaven means not having been shaved.