IPA: /nɒnˈfæktər/
KK: /nɑnˈfæktər/
Something that does not have an important effect or influence on a situation.
In the final decision, the weather was a nonfactor since it was indoors.
Nonfactor → It is formed from "non-" (meaning not) and "factor" (from Latin "facere", meaning to do or make). The word "nonfactor" refers to something that does not contribute or is not a factor in a situation.
Think of 'non-' meaning 'not' and 'factor' meaning 'to do' or 'to make' — so a nonfactor is something that does not make a contribution.