Nonchalant rhymes with:
avant, bankvermont, bondt, bonte, cheuvront, commandant, croissant, debutante, detente, dhondt, dumont, font, fonte, guimont, kvant, labonte, lafont, lamont, lamonte, lemont, mont, pont, ponte, poussaint, prashant, savant, shant, shrikant, vermont, want