Grueling | Definition of grueling by Merriam-Webster

Full Definition of GRUELING

: trying or taxing to the point of exhaustion : punishing <a grueling race>

— gru·el·ing·ly \-liŋ-lē\ adverb

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gru·el·ing or gru·el·ling \ˈgrü-ə-liŋ\

from present participle of obsolete gruel to exhaust, punish, from gruel, noun

First Known Use: 1852

Synonyms: arduous, Augean, backbreaking, challenging, demanding, difficult, effortful, exacting, formidable, hard (or gruelling), heavy, hellacious, herculean, killer, laborious, moiling, murderous, pick-and-shovel, rigorous, rough, rugged, severe, stiff, strenuous, sweaty, tall, testing, toilsome, tough, uphill

Antonyms: cheap, easy, effortless, facile, light, mindless, simple, soft, undemanding

: calling for great effort <a grueling job>

gru·el·ing or gru·el·ling \ˈgrü-ə-liŋ\

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