IPA: /ʌnˈwʌn/
KK: /ʌnˈwʌn/
Not achieved victory or success in a competition or contest.
The team left the tournament with an unwon title, hoping to do better next year.
Unwon → It is formed from "un-" (meaning not) and "won" (from Old English "winnan", meaning to win or gain). The word "unwon" means not won or not achieved.
Think of 'not' ('un-') having 'achieved' something ('won'). This helps you remember that 'unwon' means something that has not been won.