MeanOF

periodic

- adjective (adj)

Meaning: at fixed intervals

Synonyms: alternate annual at various times centennial cyclic cyclical daily epochal every once in a while every so often fluctuating hourly infrequent intermittent isochronal isochronous monthly occasional on-again-off-again on certain occasions orbital perennial periodical recurrent recurring regular repeated rhythmic routine seasonal serial spasmodic sporadic weekly yearly

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.