Added 9 October 2026 coincidentally adverb Categories: Describing WordsRare Words adverb ! Definition from WordNet 3.1, Princeton University. More about coincidentally at Wordnik → Where our words come from → Happening at the same time. Related Words: coincidentlycoincidenceconvenientlyincidentlyincidentallyrandomlyaccidentallycasuallysuspiciouslyuncoincidentallynoncoincidentlycoïncidentally Back to today's word