If a word conforms to a special rule, I call it a Fair Word. If it does not conform to this rule, I call it an Unfair Word. Here is a list (not exhaustive) of some Fair Words and Unfair Words:
|Fair Words||Unfair Words|
Fair Words,Unfair Words BEDSPREAD,DUVET PRONUNCIATION,SPELLING YETI,BIGFOOT DEEP,HIGH ICY,SOLID DUPLICATE,CLOSURE BADLY,WELL EVERY,SINGLE
Main question: find the rule which determines Fair Words and Unfair Words.
Bonus question: which of the above Fair Words is a Super-Fair Word?
Hints and further information:
The order of the words doesn't matter.
There is no significance in the particular choice of Unfair Words: they're just words vaguely similar to the Fair Words opposite them which are not Fair.
The meaning of the words doesn't matter.