effortful

adjectives

requiring great physical effort

effortful

is derived from

effortfulness

antonym

effortless

is similar to

characterized by effort to the point of exhaustion; especially physical effort

"worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"

arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome

is similar to

marked by a painfully slow and effortful manner

"it was a strange dragging approach"; "years of dragging war"

dragging

is similar to

producing exhaustion

"an exhausting march"; "the visit was especially wearing"

exhausting, tiring, wearing, wearying

is similar to

requiring or showing effort

"heavy breathing"; "the subject made for labored reading"

heavy, labored, laboured

is similar to

requiring a large expenditure of labor but not much capital

"cottage industries are labor intensive"

labor-intensive, labour-intensive

is similar to

(of movement) slow and laborious

"leaden steps"

leaden, plodding

is similar to

both extremely effortful and futile

Sisyphean

is similar to

taxing to the utmost; testing powers of endurance

"his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt

arduous, straining, strenuous