formidable

/fɔrˈmɪdəbəl/
adjective
  1. Causing fear, dread, or awe because of size, strength, or power.
    • The storm was so formidable that everyone stayed indoors.
    • She faced a formidable opponent in the chess tournament.
    • The castle was a formidable fortress, impossible to attack.
  2. Very difficult to deal with or overcome.
    • He overcame a formidable obstacle to finish the race.
    • Learning a new language can be a formidable challenge.
    • The team had a formidable task ahead of them.
  3. Inspiring respect or admiration because of impressive qualities.
    • His knowledge of history is truly formidable.
    • The scientist's reputation was formidable in the academic world.
    • She is a formidable leader who commands respect.
Antonyms