Here's what rhymes with mortarboard.
starboard harbored Words that almost rhyme with mortarboard
tortured bordered chartered bartered martyred disordered quartered faltered unaltered forward bothered cornered foreword garnered tottered conquered sponsored northward watered pondered proffered soldered collared fathered hollered stoppered watchword doctored wandered fostered prospered slaughtered conjured dishonored sauntered cantered coauthored crossword laundered reconquered snored straightforward unconquered henceforward squandered thenceforward