grueling

[ groo-uh-ling, groo-ling ]
/ ˈgru ə lɪŋ, ˈgru lɪŋ /

adjective

exhausting; very tiring; arduously severe: the grueling Boston marathon.

noun

any trying or exhausting procedure or experience.
Also especially British, gru·el·ling.

Origin of grueling

1850–55; slang gruel punishment (noun), punish (v.) + -ing2, -ing1

Related forms

gru·el·ing·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for gruelling

British Dictionary definitions for gruelling

gruelling

US grueling

/ (ˈɡruːəlɪŋ) /

adjective

severe or tiringa gruelling interview

noun

informal a severe experience, esp punishment

Word Origin for gruelling

C19: from now obsolete vb gruel to exhaust, punish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012