The phonetic transcription of "unsurpassable" is /ˌʌnsəˈpɑːsəbəl/ in British English and /ˌʌnsərˈpæsəbəl/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "unsurpassable": peerless, unrivaled, incomparable, supreme, matchless.
Example usage of "unsurpassable": "The view from the summit was unsurpassable, a truly amazing experience.". More examples on the page.