Overemphasize rhymes with:
deemphasize, emphasize, reemphasize, deemphasize, emphasize, reemphasize, deemphasize, emphasize, reemphasize, deemphasize, emphasize, fantasize, hypothesize, metastasize, ostracize, reemphasize, romanticize, synthesize
Overemphasize sounds like:
o'brenovich, obrenovich, overemphasizes