retardon Academic Vocabulary Listretardado,retardo,retrasado retard retard(verb) retardado,retardo,retrasado retardation retardation(noun) atraso,retraso retarded retarded(adjective) retardado,retrasado retardant retardant(noun) retardante Forms otherverbnounadjective retard retard retardation retarded retardant