Regester rhymes with:
register, register, register, alister, allister, armbrister, ballester, banister, barrister, burmester, callister, cannister, chedester, chidester, chronister, collister, edmister, flemister, forister, hardister, hiester, hollister, keister, kiester, macallister, register, reister, riester, sinister
Regester sounds like:
racketeer, rakestraw, raster, rastetter, raxter, reactor, rector, rectory, register, registrar, registry, reister, requester, resetar, rester, restore, restorer, richter, riester, riesterer, righter, rister, roaster, rochester, rocketry, roister, rooster, rossiter, roster, royster, rustier