Cosmetic rhymes with:
arithmetic, emetic, acetic, aesthetic, alphabetic, anesthetic, apathetic, apologetic, arithmetic, ascetic, athletic, bionetic, diabetic, diamagnetic, dietetic, diuretic, electromagnetic, emetic, empathetic, energetic, epigenetic, esthetic, ferromagnetic, frenetic, genetic, geomagnetic, helionetic, hettick, homiletic, hyperkinetic, intermagnetic, kinesthetic, kinetic, magnetic, paramagnetic, parasympathetic, parthenogenetic, pathetic, peripatetic, pharmakinetic, phonetic, poetic, prophetic, prosthetic, sympathetic, synergetic, synthetic, unapologetic, unsympathetic
Cosmetic sounds like:
camdessus, canada's, canandaigua, candace, candice, candice's, candidacies, candidacy, candidate's, candidates, candidates', candies, candiotti's, candy's, cementos, cendejas, cenith's, centex, cents, chants, checkmates, chenowitz, chintzy, ciments, cindy's, cinematic, cocoanuts, coconuts, cognetics, comatose, comdex, comdisco, comedic, comedies, comedy's, comet's, comets, comitatus, command's, commandos, commands, commends, comments, commits, committee's, committees, committees', commodious, commodities, commodity's, communities, community's, commutes, comtois, condos, conduits, coneheads, connotes, contac, contagious, contiguous, contois, contos, coontz, cosmetics, cosmonauts, cosmonauts', countess, countesses, counties, counts, county's, cyanamid's, cynthia's