Synonyms for once or twice
- every now and then
- every so often
- infrequently
- intermittently
- now and again
- occasionally
- periodically
- sporadically
- at intervals
- at times
- every once in a while
- from time to time
- hardly
- irregularly
- not often
- off and on
- on occasion
- once and again
- once in a blue moon
- once in a while
- sometimes
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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.