Here's what rhymes with rectangulate.
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laid rage rape raid made trade page paid played shape grade wage shade tape blade cage gauge maid prayed weighed bade crusade fade grape sage arrayed babe cape gage braid frayed jade wade stage afraid delayed stayed obeyed parade evade repaid scrape spade sprayed swayed arcade grenade sh staid strayed decade escape engage betrayed brigade conveyed portrayed blockade forbade invade surveyed unpaid cascade decayed degrade upgrade outweighed overlaid pervade displayed persuade dismayed barricade dissuade homemade lemonade masquerade renegade stockade retrograde disobeyed promenade 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 graced taped replaced quaint spaced scraped effaced staked complaint escaped embraced restraint acquaint misplaced debased encased constraint displaced disgraced distaste vouchsafed