Exact Match:
- formidable
- inspiring fear; "the formidable prospect of major surgery"; "a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston; "something unnerving and prisonlike about high grey wall"
- extremely impressive in strength or excellence; "a formidable opponent"; "the challenge was formidable"; "had a formidable array of compositions to his credit"; "the formidable army of brains at the Prime Minister's disposal"
Synonyms:
- Herculean,
- abstruse,
- alarming,
- appalling,
- arduous,
- astonishing,
- astounding,
- awe-inspiring,
- awesome,
- awful,
- brutal,
- burdensome,
- challenging,
- complex,
- conspicuous,
- critical,
- daunting,
- delicate,
- demanding,
- difficile,
- difficult,
- dire,
- direful,
- dread,
- dreaded,
- dreadful,
- earnest,
- effortful,
- egregious,
- exacting,
- exceptional,
- extraordinary,
- fabulous,
- fantastic,
- fatal,
- fateful,
- fell,
- freaky,
- frightening,
- frightful,
- ghastly,
- ghoulish,
- grave,
- grim,
- grisly,
- gruesome,
- hairy,
- hard,
- hard-earned,
- hard-fought,
- heavy,
- hideous,
- horrendous,
- horrible,
- horrid,
- horrific,
- horrifying,
- imposing,
- impressive,
- incredible,
- indomitable,
- intimidating,
- intricate,
- jawbreaking,
- knotted,
- knotty,
- labored,
- laborious,
- macabre,
- marked,
- marvelous,
- mean,
- menacing,
- mighty,
- mind-blowing,
- mind-boggling,
- morbid,
- no picnic,
- not easy,
- notable,
- noteworthy,
- noticeable,
- of mark,
- onerous,
- operose,
- outstanding,
- overwhelming,
- petrifying,
- portentous,
- powerful,
- prodigious,
- redoubtable,
- remarkable,
- rigorous,
- rough,
- rude,
- rugged,
- schrecklich,
- serious,
- set with thorns,
- severe,
- shocking,
- signal,
- sober,
- solemn,
- spiny,
- staggering,
- steep,
- strenuous,
- striking,
- superior,
- terrible,
- terrific,
- terrifying,
- thorny,
- ticklish,
- toilsome,
- tough,
- tremendous,
- tricky,
- unbelievable,
- uncommon,
- uphill,
- weighty,
- wicked,
- wonderful