Offsetting rhymes with:
besetting, reseting, setting, upsetting, abetting, begetting, besetting, betting, fetting, forgetting, fretting, getting, jetting, letting, netting, petting, regretting, reseting, setting, sweating, upsetting, vetting, wetting
Offsetting sounds like:
objecting, objection's, objections, obstinacy, officiating, opposition's, oppositions