alternate beating cadenced cadent circling cyclic epochal even every other full in numbers in rhythm intermittent isochronal measured mellow metric metronomic oscillatory palpitant periodical pitapat plangent pulsatile pulsating pulsative pulsatory reciprocal recurrent recurring resonant resonating rhythmic rich rolling rotary seasonal serial sonorous staccato steady throbbing undulant undulatory vibrant vibrating wavelike wheeling