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