Added 10 October 2026 optionally /ˈɑpʃənəli/ adverb Categories: Describing WordsRare Words adverb ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about optionally at Wordnik → Where our words come from → In an optional manner. this rule is applied optionally Related Words: canfacultativepotentiallyoptionpossiblyalsoalternativelyeventuallyalternatelymaynonoptionallynonmandatorily Back to today's word