gruelling vs toilsome

gruelling and toilsome both are adjectives.

Word	Noun	Adjective	Verb	Adverb
gruelling	No	Yes	No	No
toilsome	No	Yes	No	No

As adjectives, gruelling and toilsome are synonyms defined as:

gruelling and toilsome: characterized by effort to the point of exhaustion; especially physical effort

Other synonyms of gruelling include arduous, backbreaking, grueling, hard, heavy, laborious, operose, punishing.

gruelling (adjective)	toilsome (adjective)
characterized by effort to the point of exhaustion; especially physical effort	characterized by effort to the point of exhaustion; especially physical effort