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 taleWilliam 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.
If any provision of this Act or the application thereof to any person or circumstances is held invalid, the remainder of the Act and the application of the provision to other persons not similarly situated or to other circumstances shall not be affected thereby. JSTOR Daily, 17 Oct. 2025 According to the study, Igatuia Cavernicola likely plays an important role in its cave ecosystem by eating decomposing organic matter, thereby cycling nutrients and contributing to the habitat’s overall health and function. Lauren Liebhaber, Miami Herald, 17 Oct. 2025 The book details how Japanese immigrants were affected by the 1924 Immigration Act, which barred them from becoming citizens, thereby preventing them from owning land and operating as farmers. Charlie Vargas, Oc Register, 17 Oct. 2025 The Democratic Socialist has pledged to maintain NYPD staffing levels while launching a new Department of Community Safety to handle mental health emergencies with social workers, thereby freeing up officers for crime response. Dan Gooding, MSNBC Newsweek, 16 Oct. 2025 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 24 Oct. 2025.

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

More from Merriam-Webster on thereby

Last Updated: - Updated example sentences
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