thereby

adverb

there·​by t͟her-ˈbī How to pronounce thereby (audio)
ˈt͟her-ˌbī
1
: by that : by that means
thereby lost her chance to win
2
: connected with or with reference to that
thereby hangs a tale …William Shakespeare

Examples of thereby in a Sentence

He signed the contract, thereby forfeiting his right to the property.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
They are designed to allow management to wield unilateral power over production and scale rapidly to become infrastructural, thereby extracting monopoly rents. Literary Hub, 28 May 2026 The gas was captured and fed back into the loop, thereby regenerating the starting ammonium fluoride. Mrigakshi Dixit, Interesting Engineering, 28 May 2026 As Windows Latest reports, this feature causes the CPU to ramp up to its maximum boost frequency for 1-3 seconds when the user opens apps or selects key Windows features like the Start menu, search, or Action Center, thereby accelerating their load times. Jon Martindale, PC Magazine, 28 May 2026 First-strike platform Mass drivers on the moon would operate largely outside existing early warning and attribution architectures, thereby complicating detection and response by existing early warning systems. Leonard David, Space.com, 28 May 2026 See All Example Sentences for thereby

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of thereby was before the 12th century

Cite this Entry

“Thereby.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thereby. Accessed 1 Jun. 2026.

Kids Definition

thereby

adverb
there·​by t͟ha(ə)r-ˈbī How to pronounce thereby (audio)
t͟he(ə)r-;
ˈt͟ha(ə)r-ˌbī
ˈt͟he(ə)r-
1
: by that : by that means
thereby lost her chance to win
2
: connected with or with reference to that
thereby hangs a tale

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