Competition rhymes with:
petition, repetition, dietician, dietitian, mathematician, petition, politician, repetition, theoretician, dentition, dietician, dietitian, mathematician, mortician, optician, partition, petition, politician, repetition, statistician, superstition, tactician, theoretician, titian
Competition sounds like:
cambodian, campton, compton, compudyne, computation, conniption, cumpton