0
there are two syllables in the word grueling
The word is spelt gruelling in British English and grueling in American English.
The girl picked up her pencil to do more grueling homework.
I thought the fight was Grueling.
The marathon was grueling even though I had trained for weeks.
The long, difficult math exam was found to be grueling by even the most intelligent of the class.
arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome