Simple Definition of testing

from our Learner's Dictionary

testing

adjective

ˈtɛstɪŋ

: difficult to deal with

It's been a testing [=trying] time for all of us.

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“Testing.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/testing. Accessed 19 Jun. 2026.

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