Oxygenate rhymes with:
halogenate, hydrogenate, halogenate, hydrogenate, originate, alienate, assassinate, carbonate, chlorinate, concatenate, contaminate, cross-pollinate, decaffeinate, decontaminate, denominate, determinate, detonate, discriminate, disseminate, dominate, eliminate, emanate, exterminate, fascinate, fulminate, germinate, halogenate, hydrogenate, hyphenate, impersonate, incriminate, inseminate, insubordinate, isocyanate, italianate, latinate, marinate, opinionate, originate, pollinate, predominate, procrastinate, rejuvenate, resonate, self-pollinate, subordinate, terminate, titanate, urinate
Oxygenate sounds like:
oakmont, occasioned, okamoto, okimoto, oquendo, osment, osmond, osmund, oxygenated, ozment, ozmet