Here's what rhymes with definably.
indefinably Words that almost rhyme with definably
finitely resignedly finally desirably viably vitally excitably dynasty silently reliably defiantly mightily piously righteously spirally tidily vaginally undesirably tidally advisably spinelessly variety piety rivalry piracy skilfully delightfully rightfully undeniably frightfully tirelessly simony impiously mindlessly spitefully vibrancy lifelessly mindfully timelessly certifiably guilelessly society anxiety privacy justifiably indescribably pliancy stridently stridency unreliably pliantly torridity asininely primacy sobriety malignity unjustifiably irreconcilably unskilfully propriety notoriety recognizably insobriety contrariety compliantly impropriety