Princeton's WordNet

1. occasionally, on occasion, once in a while, now and then, now and again, at times, from time to time(adverb)

   now and then or here and there

   "he was arrogant and occasionally callous"; "open areas are only occasionally interrupted by clumps of trees"; "they visit New York on occasion"; "now and again she would take her favorite book from the shelf and read to us"; "as we drove along, the beautiful scenery now and then attracted his attention"

Kernerman English Learner's Dictionary

1. occasionally(adverb)əˈkeɪ ʒə nl i

   not frequently, but sometimes

   I occasionally go to movies alone.

Wiktionary

1. occasionally(Adverb)

   From time to time; now and then; once in a while; irregularly.

Webster Dictionary

1. Occasionally(adverb)

   in an occasional manner; on occasion; at times, as convenience requires or opportunity offers; not regularly

• nou en dan, somsAfrikaans
• أحْياناArabic
• понякогаBulgarian
• ocasionalmentePortuguese (BR)
• občasCzech
• gelegentlichGerman
• nu og daDanish
• σποραδικά, πότε πότεGreek
• de vez en cuando, a vecesSpanish
• vahetevahelEstonian
• گهگاهFarsi
• satunnaisestiFinnish
• de temps en tempsFrench
• מִדי פַּעַםHebrew
• कभी कभीHindi
• povremenoCroatian
• alkalmilag, néhaHungarian
• kadang-kadangIndonesian
• öðru hverjuIcelandic
• occasionalmenteItalian
• 時々Japanese
• 임시로Korean
• retkarčiaisLithuanian
• reizēm; šad un tadLatvian
• sekali-sekalaMalay
• nu en danDutch
• nå og da, av og tilNorwegian
• niekiedyPolish
• گهگاهPersian
• كله كلهPashto
• de vez em quandoPortuguese
• ocazionalRomanian
• иногдаRussian
• príležitostneSlovak
• tu pa tamSlovenian
• povremenoSerbian
• då och då, emellanåtSwedish
• บางครั้งบางคราวThai
• arasıraTurkish
• 偶然，偶爾，有時候Chinese (Trad.)
• випадковоUkrainian
• موقع بہ موقعUrdu
• thỉnh thoảngVietnamese
• 偶然，偶尔，有时候Chinese (Simp.)