The word "formidable" in English means: Inspiring fear or respect through being impressively large, powerful, intense, or capable; something difficult to deal with., Very impressive in strength or skill and therefore difficult to defeat..
The phonetic transcription of "formidable" is /fɔːˈmɪdəbəl/ in British English and /fɔːrˈmɪdəbəl/ in American English. Click the 🔊 button to hear both pronunciations.