Word Games Pro Dictionarynonfissionable adjectivenot capable of undergoing fission ⧉Copy definition ↗Share ▣Print / Save PDFQuick referenceWord FactsWord length14Starts withNEnds withEContainsONScrabble score19Database sourceOEWN 2025 CoreMeaningDefinitionsadjectivenot capable of undergoing fissionOpposite wordsAntonyms fissionableKeep exploringRelated Tools Word Unscrambler Build words from mixed letters. → Scrabble Finder Find playable words and scores. → Word Finder Search A–Z word lists and patterns. → Starts With N Words beginning with N. → Ends With E Words ending with E. → 14 Letter Words Explore verified 14-letter words. →