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Definition of formidability :
Formidableness.
Synonyms:
ruggedness, staying power, temper, stamina, huskiness
difficulty (part of speech: noun)
fussiness, roughness, toughness, stressfulness, wearisomeness, difficulty, complication, oppressiveness, tightness, adversity, trickiness, harshness, ordeal, hardness, cantankerousness, severity, contrariness, ticklishness, onerousness, cumbersomeness, knottiness, wearying, complexity, arduousness, strenuousness