Exar rhymes with:
flexer, boxer, daxor, elixir, faxer, fixer, flexer, indexer, luxor, mixer, multiplexer, paxar, saxer, sixer, taxer
Exar sounds like:
eagar, eager, eaker, easier, ecker, ecru, eger, egerer, egger, eicher, equicor, esarey, escher, escora, escrow, esker, esquer, esquire, esrey, essary, esser, euchre, exchequer, eyecare, eyesore, ezer, ezra