(ŏn′ə-gĕn′ ôf′ə-gĕn′, ŏf-, ôn′-)adj.Informal Existing or continuing sporadically; intermittent or occasional: an on-again, off-again correspondence.Thesaurus
on-again, off-again
adjectiveInformal. Happening or appearing now and then:fitful, intermittent, occasional, periodic, periodical, sporadic.