Here's what rhymes with plasmaticness.
Words that almost rhyme with plasmaticness
massiveness mannishness lavishness passiveness mantissas snappishness waggishness raffishness combativeness clannishness impassiveness caddishness faddishness brackishness draughtiness laddishness rabidness attractiveness harelips managements expansiveness outlandishness gallivants establishments blandishments