Constructors rhymes with:
instructors, instructors, instructors, instructors, abductors, conductors, instructors, semiconductor's, semiconductors, abductors, actor's, actors, actors', benefactor's, benefactors, character's, characters, characters', chiropractor's, chiropractors, collector's, collectors, collectors', conductors, connectors, constrictors, contractor's, contractors, contractors', defectors, detectors, detractors, director's, directors, directors', doctor's, doctors, doctors', electors, factors, factors', hector's, injectors, inspector's, inspectors, inspectors', instructors, lechters, malefactors, objectors, predictors, proctor's, proctors, projectors, prospectors, protectors, reactor's, reactors, reflectors, refractors, sector's, sectors, semiconductor's, semiconductors, specter's, spektr's, subcontractors, superconductors, tractors, vectors, victor's, victors