Words That Rhyme With "Opportunist" :

2 syllables:

fumet, jainist, kumiss, menaced, munis, soonest, unit, Zenist

3 syllables:

arcanist, balloonist, bassoonist, cartoonist, hygienist, machinist, pianist, sopranist, trombonist

4 syllables:

Hinayanist, magazinist, Mahayanist, violinist