Definition for Formidable:

• Exciting fear or dread; dreadful.

Synonyms for Formidable:

• adj.

  •ambitious (adjective)
  • impressive,
  • strenuous,
  • grandiose,
  • severe.
  •dangerous (adjective)
  • parlous,
  • portentous,
  • Jeopardous.
  •difficult (adjective)
  • fussy,
  • contrary,
  • troublesome,
  • harsh,
  • tough,
  • rough,
  • tight,
  • oppressive,
  • finicky,
  • wearying,
  • burdensome,
  • toilsome,
  • Operose,
  • cumbersome,
  • tricky,
  • ticklish,
  • wearisome,
  • laborious,
  • complicated,
  • demanding,
  • uphill,
  • adverse,
  • wearing,
  • bothersome,
  • complex,
  • trying,
  • not easy,
  • immense,
  • stressful,
  • grinding,
  • Difficile,
  • cantankerous,
  • stiff.
  •difficult, overwhelming (adjective)
  • labored,
  • rough go,
  • mighty,
  • great,
  • murder,
  • challenging,
  • colossal,
  • tall order,
  • staggering,
  • indomitable,
  • all-powerful,
  • overpowering,
  • mammoth,
  • ballbuster,
  • powerful,
  • puissant,
  • tough proposition.
  •fearful (adjective)
  • grisly.
  •fearsome (adjective)
  • frightening.
  •horrible, terrifying (adjective)
  • awful,
  • horrific,
  • dismaying,
  • daunting,
  • intimidating,
  • menacing,
  • fierce,
  • threatening.
  •invulnerable (adjective)
  • unbeatable,
  • indestructible,
  • invincible,
  • impenetrable,
  • immune,
  • invulnerable,
  • impervious.
  •strong (adjective)
  • husky,
  • stable,
  • brawny,
  • vital,
  • energetic,
  • sinewy,
  • potent,
  • mettlesome,
  • sturdy,
  • virile,
  • vigorous,
  • muscular,
  • robust,
  • firm,
  • stout.

• n.

  •
  • forbidding,
  • impregnable.
  •
  • overwhelming.
  •
  • imposing.
  •formidable (noun)
  • alarming,
  • unnerving.

Antonyms for Formidable:

• adj.

  • difficult, overwhelming
    ineffective, little, facile, insignificant, small.
  • horrible, terrifying
    harmless, poor, calm, not hard, powerless, pleasant, nice, trivial, feeble, friendly, unimportant, weak, unthreatening, easy.
  • Other antonyms:
    friendly, accessible, unimpressive, undemanding, reassuring, consoling, contemptible, despicable, achievable, user-friendly, relaxed, calming, tranquilizing, clear, inviting, helpless, pacifying, harmless, weak, relaxing, feeble, soothing, uncomplicated, powerless, manageable, gentle, doable, elementary, lulling, comforting, mindless, unalarming.