The phonetic transcription of "undreamt of" is /ˌʌnˈdremt ɒv/ in British English and /ˌʌnˈdremt ʌv/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "undreamt of": unimagined, unforeseen, unexpected, inconceivable.
Example usage of "undreamt of": "They achieved success undreamt of.". More examples on the page.