Here's what rhymes with underabundant.
abundant redundant superabundant overabundant Words that almost rhyme with underabundant
pungent suntanned incumbent recumbent pedant pundit judgment judgement abutment adjustment bucket puppet buffet apposite buttressed dullest toughest ebullient dulcet atomised davit dovecote dumbest duvet dovecot summit musket repugnant couplet covet gullet roughest mullet plummet sibilant subtlest justest prejudgment bluntest kaput refaced stomached youngest triumphant trumpet indulgent maladjustment readjustment compassed inelegant effulgent misjudgment occultist demulcent discussant cultist decollete misjudgement muralist reluctant resultant consultant exultant engulfment reanimate refulgent strumpet magniloquent encompassed overindulgent