The phonetic transcription of "unfounded" is /ʌnˈfaʊndɪd/ in British English and /ʌnˈfaʊndɪd/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "unfounded": unjustified, specious, false, empty, groundless.
Example usage of "unfounded": "The rumor was unfounded and untrue.". More examples on the page.