Here's what rhymes with irrigate.
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cage gauge cape gage made laid page paid shape grade wage rage shade tape brigade maid rape weighed bade blockade fade grape raid sage arrayed babe decayed arcade jade wade stage trade played afraid decade escape engage stayed blade prayed forbade obeyed parade surveyed unpaid cascade evade repaid scrape spade swayed upgrade barricade braid frayed grenade pervade renegade sh staid delayed conveyed persuade crusade invade degrade retrograde sprayed lemonade outweighed overlaid stockade strayed displayed betrayed portrayed dismayed disobeyed dissuade homemade masquerade promenade videotape based faced shaped taste waste faint paint haste saint waist baked chased paste quaint acquaint chaste laced paced raced raped taint graced raked taped placed escaped traced spaced braced draped erased scraped debased effaced encased staked replaced complaint displaced embraced restraint disgraced distaste misplaced vouchsafed constraint