periodic

1 appearing or occurring repeatedly from time to time sent out periodic reminders about the office dress code Synonyms constant, frequent, habitual, regular, periodical, repeated, steadyRelated Words continual, intermittent, recurrent, recurring; cyclic (or cyclical); around-the-clock, hourly, round-the-clock, 24-7 (or 24/7); chronic, confirmed, inveterate; expected, usualNear Antonyms episodic (also episodical), occasional; unexpected, unusualAntonyms inconstant, infrequent, irregular

2 occurring or appearing at intervals periodic snow showers that might leave up to an inch Synonyms continual, on-and-off, intermittent, periodical, recurrent, recurringRelated Words alternate, alternating, cyclic (or cyclical), rhythmic (or rhythmical), seasonal, serial; aperiodic, erratic, fitful, irregular, occasional, spasmodic, sporadic, spotty, unsteadyNear Antonyms eternal, everlasting, interminable, perpetualAntonyms constant, continuous, incessant, unceasing