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strenuous

adjective

/ˈstrɛnjuəs/

Meaning

Requiring or using great effort and energy.

Climbing the mountain was a strenuous task.

arduous, exhausting, demanding, vigorous

easy, effortless, simple

strenuous exercise, strenuous effort, strenuous task

Financially rewarding or profitable.

Relating to microorganisms, especially bacteria.

Appropriate to the time of year or season.

Selfless, showing concern for others' welfare without self-interest.

Relating to, situated in, or characteristic of the east.

Featuring new methods; advanced and original.