US /ˈɡruːəlɪŋ/ UK /ˈɡruːəlɪŋ/
adj

Meanings

  1. 1
    adj

    extremely tiring and demanding

    The grueling march lasted three days without rest.

Thesaurus

Synonyms
Opposites
Word family
Derived forms gruelingly
Related forms gruel

Etymology

From gruel, in the now-obsolete sense 'to exhaust or punish', figuratively from the phrase 'to get one's gruel' meaning to receive punishment; ultimately from Old French gruel ('meal, porridge').

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