backbreaking vs operose

backbreaking and operose both are adjectives.

Word	Noun	Adjective	Verb	Adverb
backbreaking	No	Yes	No	No
operose	No	Yes	No	No

As adjectives, backbreaking and operose are synonyms defined as:

backbreaking and operose: characterized by effort to the point of exhaustion; especially physical effort

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

backbreaking (adjective)	operose (adjective)
characterized by effort to the point of exhaustion; especially physical effort	characterized by effort to the point of exhaustion; especially physical effort