IPA: /ˈfʌn.i.əst/
KK: /ˈfʌnɪst/
The most amusing or entertaining; causing laughter more than anything else.
That was the funniest joke I have ever heard!
Comparative: funnier
Superlative: funniest
Funniest → It is formed from "fun" (from Middle English *fon*, meaning amusement or enjoyment) and the suffix "-iest" (meaning most). The word "funniest" means the most amusing or enjoyable.
Think of 'fun' as amusement and remember that 'funniest' means the most amusing.