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: G Gé Gö G- G. G< Ga Gb Gc Gd Ge Gh Gi Gj Gl Gm Gn Go Gp Gr Gs Gu Gw Gy

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WORDNET DICTIONARY
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OXFORD DICTIONARY

gruelling

Adjective, Noun

gru=el=ling

WORDNET DICTIONARY

gruelling(s = adj.all) arduous, backbreaking, grueling, hard, heavy, laborious, operose, punishing, toilsome - characterized by effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"

gruelling, adj.

characterized by toilsome effort; requiring extreme physical or mental effort; as, a grueling campaign. [WordNet 1.5]

gruelling, adj. & n. (US grueling)
--adj. extremely demanding, severe, or tiring.
--n. a harsh or exhausting experience; punishment.

Derivative

gruellingly adv.

Etymology

GRUEL as verb, = exhaust, punish

For further exploring for "gruelling" in Webster Dictionary Online