Optic rhymes with:
coptic, synoptic, antiseptic, apocalyptic, coptic, cryptic, ecliptic, epileptic, fiberoptic, peptic, septic, skeptic, synoptic, triptych
Optic sounds like:
obits, obtuse, obviates, opdyke, opiates, opitz, optek, optica, optics, opts, optus, ovett's, oviatt's, ovitt's, ovitz, ovitz's