The definition of arduous is a way of describing something that is extremely tiring and difficult.
Requiring great physical exertion
The definition of burdensome is something that is hard to deal with, or that places too great of expectations.
Requiring much effort or attention:
Making severe demands; rigorous:
Requiring more than is reasonable; demanding; exacting
Difficult to undertake, surmount, or defeat:
Hard to lift or move because of great weight; weighty
Marked by or requiring long, hard work:
(Law) Entailing more liabilities than benefits or imposing significant obligations.
Hard to put up with; causing great discomfort or fatigue
Harsh, severe, or demanding:
Difficult to travel over or through:
The definition of severe is someone or something that is very serious, harsh or critical.
Difficult to endure; severe; harsh:
Having considerable weight; heavy.
Obviously planned or calculated; not spontaneous or natural; labored:
Produced under strain; not spontaneous:
Produced or done with effort:
Lacking in shade; undiminished:
Find another word for effortful. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for effortful, like: arduous, backbreaking, burdensome, demanding, exacting, exigent, formidable, heavy, laborious, onerous and oppressive.