WordNet: periodic, periodical
happening or recurring at regular intervals; "the periodic appearance of the seventeen-year locust"
- similar to cyclic
- similar to oscillating, oscillatory
- similar to diurnal
- similar to daily, day-after-day, day-by-day, day-to-day
- similar to nightly
- similar to hebdomadal, hebdomadary, weekly
- similar to biweekly, semiweekly
- similar to hourly
- similar to half-hourly
- similar to biweekly, fortnightly
- similar to annual, yearly
- similar to biannual, biyearly, half-yearly, semiannual
- similar to biennial, biyearly
- similar to triennial
- similar to monthly
- similar to bimestrial, bimonthly
- similar to bimonthly, semimonthly
- similar to semestral, semestrial
- similar to midweekly
periodic
- (englanti) aperiodic (antonym)
- (englanti) periodicity (derivationally related)
- (suomi) jaksoittainen (synonyymi)
periodical
- (englanti) period (derivationally related)
- (englanti) periodical (derivationally related)
- (suomi) ajoittainen (synonyymi)