testing

1 of 2

adjective

test·​ing ˈte-stiŋ How to pronounce testing (audio)
Synonyms of testingnext
: requiring maximum effort or ability
… a most difficult and testing problem.—Ernest Bevin

testing

2 of 2

present participle of test entry 2

Synonyms of testing

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Adjective

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Examples of testing in a Sentence

Adjective beginning rock climbers should choose a less testing route to the summit

Word History

First Known Use

Adjective

1858, in the meaning defined above

Time Traveler
The first known use of testing was in 1858

Phrases Containing testing

Rhymes for testing

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Browse Nearby Words

testiness
testing
testing clause
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Cite this Entry

“Testing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/testing. Accessed 1 Sep. 2026.

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