strenuous

adjective

stren·​u·​ous ˈstren-yə-wəs 

1

a

: vigorously active : energetic

b

: fervent, zealous

his most strenuous supporters

2

: marked by or calling for energy or stamina : arduous

a strenuous hike

strenuosity

ˌstren-yə-ˈwä-sə-tē 

noun

strenuously

ˈstren-yə-wəs-lē 

adverb

strenuousness noun

Synonyms

• aggressive
• assertive
• dynamic
• emphatic
• energetic
• forceful
• full-blooded
• muscular
• resounding
• vehement
• vigorous
• violent

Choose the Right Synonym for strenuous

vigorous, energetic, strenuous, lusty, nervous mean having or showing great vitality and force.

vigorous further implies showing no signs of depletion or diminishing of freshness or robustness.

as vigorous as a youth half his age

energetic suggests a capacity for intense activity.

an energetic campaigner

strenuous suggests a preference for coping with the arduous or the challenging.

the strenuous life on an oil rig

lusty implies exuberant energy and capacity for enjoyment.

a lusty appetite for life

nervous suggests especially the forcibleness and sustained effectiveness resulting from mental vigor.

full of nervous energy

Examples of strenuous in a Sentence

Avoid all strenuous exercise until the sprain heals.

Today has been a very strenuous day.

The proposal has faced strenuous opposition.

Recent Examples on the Web

For this, the wider technology industry still has a strenuous battle to fight, though the value is slowly starting to materialize. —Dr. Sai Balasubramanian, M.d., Forbes.com, 7 Apr. 2025

After the operation, I wouldn’t be allowed to lift anything remotely heavy or do any strenuous activity for four to six weeks. —Nicola Dall'asen, Allure, 7 Apr. 2025

Emergency physician and CrossFit coach Dr. Heather L Hinshelwood provided her insight on this kind of strenuous activity for Newsweek. —John W. Dean, MSNBC Newsweek, 7 Apr. 2025

Democracy is a discipline, like diet and exercise, strenuous and irksome. —David Bezmozgis, New Yorker, 6 Apr. 2025

Word History

Etymology

Latin strenuus

First Known Use

1599, in the meaning defined at sense 1a

Rhymes for strenuous

• disingenuous
• ingenuous

Kids Definition

strenuous

adjective

stren·​u·​ous ˈstren-yə-wəs 

1

a

: very active : energetic

leads a strenuous life

b

: fervent, zealous

strenuous protest

2

: showing or requiring great energy

strenuous tasks

strenuously adverb