once a year
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
RELATED WORDS AND SYNONYMS FOR ONCE A YEAR
annual
adjectiveoccurring, done yearlyannually
adverboccurring, done yearlyyearly
adjectiveevery twelve monthsRoget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.