Ambush rhymes with:
federbush, firebush, flatbush, forbush, furbush, quackenbush, ritterbusch, rosebush, schimmelbusch, shadbush, wedbush, winbush
Ambush sounds like:
ambac, ambase, ambiguous, ambs, ambushes, amfac, amfesco, amoebas, amoebic, ampco, ampex, amphibious