IPA: /ˈpʌz.lər/
KK: /ˈpʌzlər/
A person who enjoys solving puzzles or a challenging problem that needs to be figured out.
She is a skilled puzzler who can solve complex riddles in no time.
Puzzler → The word is formed from "puzzle" (originating from the late 16th century, possibly from the dialectal English 'puzzle', meaning to confuse or perplex) and the suffix "-er" (meaning a person who). A puzzler is a person who confuses or perplexes others, often through a riddle or problem.
Think of someone who 'confuses' or 'perplexes' others with a riddle or problem — that's what a puzzler does.