köken: Borrowed from Arabic بَعْضًا (baʕḍan), adverbial accusative of بَعْض (baʕḍ). By surface analysis, baʼzi + -an. Compare Azerbaijani bəzən and Turkish bazen.
occasionally, from time to time, not frequently or regularly
eş: 종종, 종종히
zıt: 늘, 언제나, 항상, 자주
köken: First attested in the Eorokhae (語錄解 / 어록해), 1652, as Early Modern Korean ᄀᆞᆺ곰 (Yale: koskwom), equivalent to ᄀᆞᆺ (Yale: kos, “just now”) + -곰 (Yale: -kwom, “distributive suffix”).
every now and then, every once in a while, sometimes (very seldom)
köken: hé (Old Hungarian variant of hő (“heat”)) + -be (“in”, folksy variant of -ben) + hó (“snow”) + -ba (“in”, folksy variant of -ban). Its original meaning was “in heat and in snow”, that is “always”. Later, the meaning of its parts had faded because of its similarity to reduplications such as gizgaz (“weed”) and mendemonda (“hearsay”); this may be how its current meaning changed to “sometimes”.
köken: Etymology tree Proto-Indo-European *h₁én Proto-Indo-European *h₁entér Proto-Italic *n̥ter Latin inter Latin dum Latin interdum From inter + dum.