n. 25B6; verb
her decision puzzled me : PERPLEX, confuse, bewilder, bemuse, baffle, mystify, confound, nonplus; informal flummox, faze, stump, beat; N. Amer. informal discombobulate.
she puzzled over the problem : THINK HARD ABOUT, mull over, muse over, ponder, contemplate, meditate on, consider, deliberate on, chew over, wonder about.
she tried to puzzle out what he meant : WORK OUT, understand, comprehend, sort out, reason out, solve, make sense of, make head or tail of, unravel, decipher; informal figure out, suss out.
25B6; noun the poem has always been a puzzle : ENIGMA, mystery, paradox, conundrum, poser, riddle, problem; informal stumper.