IPA: /ˈkæʧiɪst/
KK: /ˈkæʧiɪst/
The most appealing or memorable, especially in a way that attracts attention or is easy to remember.
That song has the catchiest tune I've ever heard!
Comparative: catchier
Superlative: catchiest
Catchiest → It is formed from "catch" (from Old English *ceccan*, meaning to seize or capture) and the suffix "-iest" (meaning most). The word "catchiest" refers to something that is the most effective at seizing attention or interest.
Think of something that is the most effective at 'seizing' attention — 'catch' means to seize, and '-iest' indicates the superlative form.