IPA: /ʌnˈfɛrɪst/
KK: /ʌnˈfɛrɪst/
The most unjust or inequitable; lacking fairness to the highest degree.
It was the unfairest decision I had ever seen in the competition.
Comparative: more unfair
Superlative: unfairest
Unfairest → It is formed from "un-" (meaning not) and "fair" (from Old English *fæger*, meaning beautiful or pleasing) and the superlative suffix "-est" (indicating the highest degree). The word "unfairest" means the most not beautiful or pleasing, indicating a lack of fairness or beauty.
Think of 'not' ('un-') and 'beautiful' ('fair') to remember that 'unfairest' means the most lacking in beauty or fairness.