arduous

The definition of arduous is a way of describing something that is extremely tiring and difficult.

(adjective)

The John Beargrease Sled Dog Marathon is an example of an arduous race.

Arduous is defined as a sharp, high climb where reaching the top is a challenge.

(adjective)

Mt. Everest is an example of an arduous incline.

See arduous in Webster's New World College Dictionary

adjective

Origin: L arduus, steep < IE *er(ə)dh-, high, to grow (> L arbor, tree) < base *er-, to set in motion, run

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See arduous in American Heritage Dictionary 4

adjective

Demanding great effort or labor; difficult: “the arduous work of preparing a Dictionary of the English Language” (Thomas Macaulay).
Testing severely the powers of endurance; strenuous: a long, arduous, and exhausting war.
Hard to traverse, climb, or surmount. See Synonyms at burdensome, hard.

Origin:

Origin: From Latin arduus, high, steep

Related Forms: