What rhymes with conserve?

Conserve rhymes with:

serv, serve, underserve, curve, d'oeuvre, deserve, herve, hors-d-oeuvre, irv, irve, merv, mirv, nerve, observe, preserve, reserve, serv, serve, swerve, underserve, unnerve, verve, zurve

Conserve sounds like:

cancerphobia, congrove

What rhymes with conserve?