• (America) IPA: /ˈfɔːɹmɪdəbəl/, IPA: /fɔːɹˈmɪdəbəl/
• (British) IPA: /fɔːˈmɪdəbəl/, /fəˈmɪdəbəl/

formidable

1. Causing fear, dread, awe, or discouragement as a result of size, strength, or some other impressive feature; commanding respect; causing wonder or astonishment.
   • 1823, [Walter Scott], “The Contrast”, in Quentin Durward. [...] In Three Volumes, volume I, Edinburgh: Printed [by James Ballantyne and Co.] for Archibald Constable and Co.; London: Hurst, Robinson, and Co., OCLC 892089432 ↗, page 3 ↗:

     The latter part of the fifteenth century prepared a train of future events, that ended by raising France to a formidable power, which has ever since been, from time to time, the principal object of jealousy to the other European nations.

2. Difficult to defeat or overcome.

   a formidable opponent

• French: formidable
• German: respekteinflößend, furchteinflößend, furchterregend, gewaltig, beachtlich
• Portuguese: formidável
• Russian: гро́зный

• Russian: труднопреодоли́мый