Added 9 October 2026 coincidental /ˈkəʊ.ɪn.sɪˌdɛn.tl̩/ adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about coincidental at Wordnik → Where our words come from → Occurring as or resulting from coincidence. Happening or existing at the same time. Related Words: simultaneousconcurrentcoincidentcoincidingsynchronoussynchronicsynchronalcooccurringconcomitantskillfuloccasional Back to today's word