"one who or that which perplexes," 1650s, agent noun from puzzle (v.).
Entries linking to puzzler
puzzle v.
1590s, pusle "bewilder, confound, perplex with difficult problems or questions," possibly frequentative of pose (v.) in obsolete sense of "perplex" (compare nuzzle from nose). To puzzle (something) out "resolve or discover by long cogitation or careful investigation" is by 1781. Related: Puzzled; puzzling.
puzzlement n.
"bewilderment, state of being puzzled," by 1802, from puzzle (v.) + -ment. From 1842 as "a thing that puzzles" (compare puzzler). In the former sense Richardson used puzzledom (1748).