What rhymes with adopter?

Adopter rhymes with:

adapter, adaptor, apter, captor, chapter, emptor, eurocopter, helicopter, interceptor, kaptur, lithotripter, raptor, receptor, sceptre, sculptor, septer, subchapter, sumpter, teleprompter, velociraptor

Adopter sounds like:

adapter, adaptor

What rhymes with adopter?