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.
Sharma noted that washing grapes damages their bloom, a powdery coating that forms naturally on some fruits, thereby increasing the likelihood of moisture loss and the entry of contaminants. Alma Avalle, Bon Appetit Magazine, 13 Feb. 2026 As a result, Borges said that some of Microsoft’s compute investments are not yet flowing through to reported Azure revenue, thereby contributing to near-term concerns around monetization. Lisa Kailai Han, CNBC, 13 Feb. 2026 The humanoid robot will work as a welder, thereby improving human safety, efficiency, and production quality at shipyards. Atharva Gosavi, Interesting Engineering, 12 Feb. 2026 This keeps moisture levels down, thereby discouraging rust. David Beaulieu, The Spruce, 11 Feb. 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 18 Feb. 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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