ONETIME Synonyms: 75 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/onetime
WebSynonyms for ONETIME: occasional, one-off, one-shot, infrequent, intermittent, inconstant, irregular, nonce; Antonyms of ONETIME: frequent, regular, periodic, recurrent, steady, usual, ordinary, common.
DA: 32 PA: 17 MOZ Rank: 30