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.
The 2015 Cybersecurity Information Sharing Act facilitated information sharing between the government and the private sector, thereby protecting companies from the legal risks associated with sharing sensitive data. PC Magazine, 5 Oct. 2025 Visible operations—from stealth fighters and amphibious assault ships to transport aircraft—serve both as a deterrent and preparation for potential intervention, thereby heightening regional stakes. John Feng, MSNBC Newsweek, 3 Oct. 2025 The mass deployment of technologies that these minerals make possible—fleets of electric cars; flocks of wind turbines; a cleaner energy grid—may be imperative if our society is to reduce its reliance on fossil fuels and thereby avoid the most devastating impacts of climate change. Scott W. Stern, The Atlantic, 2 Oct. 2025 Instead of her being forced to leave it there (and Alex eventually stumbling across it), Sophi could have taken the box — thereby either denying Alex ever getting his idol, or perhaps even then later sneaking off and using the key to get the idol herself. Dalton Ross, Entertainment Weekly, 2 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 10 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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