Main Entry:

gru·el·ing

Variant(s):

or gru·el·ling \ˈgrü-ə-liŋ\

Function:

adjective

Etymology:

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

Date:

1852

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

— gru·el·ing·ly \-liŋ-lē\ adverb