gruelling
Pronunciation:
/ˈɡɹʊə.lɪŋ//ˈɡɹu.lɪŋ/noun
Definitions
(racing) A race in which the animal being raced finishes in a state of physical exhaustion.
A gruelling ordeal.
adjective
Definitions
So difficult or taxing as to make one exhausted; backbreaking.