Tacticians rhymes with:
competition's, competitions, dietitian's, dietitians, mathematicians, opticians, partitions, petitions, politician's, politicians, politicians', repetitions, statisticians, superstitions, theoreticians
competition's, competitions, dietitian's, dietitians, mathematicians, opticians, partitions, petitions, politician's, politicians, politicians', repetitions, statisticians, superstitions, theoreticians