effortful - Wordage.info - Free Thesaurus Tool for Word Discovery - Expanded Thesaurus, Reverse Dictionary Lookup

strenuous collapse: characterized by or performed with much energy or force; "strenuous exercise"

crushing collapse: physically or spiritually devastating; often used in combination; "a crushing blow"; "a crushing rejection"; "bone-crushing"

punishing collapse: resulting in punishment; "the king imposed a punishing tax"

burdensome collapse: not easily borne; wearing; "the burdensome task of preparing the income tax return"; "my duties weren't onerous; I only had to greet the guests"; "a taxing schedule"

arduous collapse: difficult to accomplish; demanding considerable mental effort and skill; "the arduous work of preparing a dictionary"; characterized by toilsome 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"; 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

Herculean collapse: extremely difficult; requiring the strength of a Hercules; "a herculean task"; displaying superhuman strength or power; "herculean exertions"

forced collapse: made necessary by an unexpected situation or emergency; "a forced landing"; forced or compelled; "promised to abolish forced labor"; produced by or subjected to forcing; "forced-air heating"; "furnaces of the forced-convection type"; "forced convection in plasma generators"

strained collapse: under great stress; "her voice was strained as she asked the question"

troublesome collapse: difficult to deal with; "a troublesome infection"; "a troublesome situation"

formidable collapse: inspiring fear; "the formidable prospect of major surgery"; "a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston; "something unnerving and prisonlike about high grey wall"; extremely impressive in strength or excellence; "a formidable opponent"; "the challenge was formidable"; "had a formidable array of compositions to his credit"; "the formidable army of brains at the Prime Minister's disposal"

oppressive collapse: marked by unjust severity or arbitrary behavior; "the oppressive government"; "oppressive laws"; "a tyrannical parent"; "tyrannous disregard of human rights"; weighing heavily on the senses or spirit; "the atmosphere was oppressive"; "oppressive sorrows"

difficult collapse: not easy; requiring great physical or mental effort to accomplish or comprehend or endure; "a difficult task"; "nesting places on the cliffs are difficult of access"; "difficult times"; "a difficult child"; "found himself in a difficult situation"; "why is it so hard for you to keep a secret?"; requiring much effort and trouble; "the mountain climb was long, steep, and difficult"

painful collapse: causing physical or psychological pain; "worked with painful slowness"

uphill collapse: the upward slope of a hill; upward on a hill or incline; "this street lay uphill"; against difficulties; "she was talking uphill"

Wordage.info