obliterates

obnubilates

obturates

obviates

odonates

officiates

oleates

operates

opiates

oppilates

orates

orchestrates

ordinates

orientates

originates

orthophosphates

oscillates

osculates

ostomates

outdates

outdebates

outmanipulates

outpopulates

outrates

outskates

outstates

overaccentuates

overarticulates

overcompensates

overcomplicates

overdecorates

overeducates

overelaborates

overestimates

overexaggerates

overhates

overinflates

overmedicates

overoperates

overpopulates

overrates

overregulates

oversaturates

overspeculates

overstates

overstimulates

ovulates

oxalacetates

oxalates

oxaloacetates