IPA: /nɒnˈwɪnɪŋ/
KK: /nɑnˈwɪnɪŋ/
Describing something that does not achieve victory or success.
The team had a nonwinning season, finishing at the bottom of the league.
Nonwinning → It is formed from "non-" (meaning not) and "winning" (from the root "win" which comes from Old English "winnan", meaning to strive or to gain victory). The word "nonwinning" means not achieving victory or success.
Think of 'non-' meaning 'not' and 'winning' referring to achieving victory — so nonwinning means not achieving victory.