Added 9 October 2026 fundamentally /ˌfʌndəˈmɛntəli/ adverb Categories: Describing WordsUncommon Words adverb ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about fundamentally at Wordnik → Where our words come from → In a fundamental or basic sense; reaching the very core of the matter. Related Words: basicallyessentiallyprincipleintrinsicallysubstantivelyprincipallymateriallyinherentlypracticallygenerally Back to today's word