Thesaurus
To save this word, you'll need to log in.
Synonyms & Antonyms of formidable
- a formidable, irascible old man who frightened the neighborhood children
Synonyms for formidable
Words Related to formidable
Near Antonyms for formidable
- running a marathon is a formidable undertaking
Synonyms for formidable
- arduous,
- Augean,
- backbreaking,
- challenging,
- demanding,
- difficult,
- effortful,
- exacting,
- grueling
- (or gruelling),
- hard,
- heavy,
- hellacious,
- herculean,
- killer,
- laborious,
- moiling,
- murderous,
- pick-and-shovel,
- rigorous,
- rough,
- rugged,
- severe,
- stiff,
- strenuous,
- sweaty,
- tall,
- testing,
- toilsome,
- tough,
- uphill
Words Related to formidable
Near Antonyms for formidable
Antonyms for formidable
- cheap,
- easy,
- effortless,
- facile,
- light,
- mindless,
- simple,
- soft,
- undemanding
Keep scrolling for more
Keep scrolling for more
Comments on formidable
What made you want to look up formidable? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
More Confusing Words—Quiz
- The magician
______moved the selected card to the top of the deck.
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZ
- More Confusing Words—Quiz
How many of these commonly confused words do you know?
Take the quiz - Name that Thing: Toys and Games Edition
It's all fun and games until someone beats your high score.
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Citation
Do you know the person or title these quotes describe?
Play the game
Share formidable
Time Traveler for formidable
The first known use of formidable was in the 15th century
See more words from the same century