Is 'funnier' really a word? Yes, 'funnier' is indeed a legitimate word in the English language. It's the comparative form of the adjective 'funny,' following the standard pattern for forming comparatives: Despite its regularity, 'funnier' often raises eyebrows.

So, is funnier a word? In short, yes. When comparing two separate entities, funnier is the correct word to use. It is the comparative of funny. For example, walking out of an open comedy mic, you might remark to your friend, “The first comedian was definitely funnier than the second.”

And they also agree that…the answer to “is funner a word?” is yes. If you want to consider “fun,” as an adjective, a word, then “funner” is indeed a word, as is “funnest,” per normal rules of adjective formation.