there·​by | \ t͟her-ˈbī How to pronounce thereby (audio) , ˈt͟her-ˌbī\

Definition of thereby

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

The dynamic outfielder is a game-changer with her bat and speed, thereby selected to the first-team all-East Bay Athletic League team. Darren Sabedra, The Mercury News, "All-Bay Area News Group softball: Meet the 2019 team," 12 June 2019 The bill declares that obtaining or administering life-ending medication is not suicide under state law, thereby legalizing the practice often called medically assisted suicide. Washington Post, "Maine becomes 8th state to legalize assisted suicide," 12 June 2019 The federal guarantee on most reverse mortgages serves to protect lenders and thereby encourage them to extend financing. Russ Wiles, azcentral, "Reverse mortgages can cause problems when spouses, heirs aren't on board," 12 June 2019 And, thereby, a pattern was established: By the end of the 3-hour, 1-minute match, a total of 46 points went 10 strokes or more. Howard Fendrich,, "Rafael Nadal beats Dominic Thiem in four sets to win his 12th French Open, 18th career Grand Slam title," 9 June 2019 He's known for starting out at the bottom of the board -- thereby scoring the high dollar amounts -- seeking out the Daily Double and betting it all. Aimee Picchi, CBS News, "Does Jeopardy! champ James Holzhauer lose today?," 3 June 2019 Michelin Guides began in 1900 when the French tire company sought to increase demand for cars, and thereby tires, by providing recommendations on where to eat and stay throughout France. Michele Parente, San Diego Union-Tribune, "San Diego joins dining elite as first Michelin star goes to Addison," 3 June 2019 British voters narrowly elected to leave the EU, thereby giving up its place in one of the world’s most powerful political unions. Rachel Janfaza, Teen Vogue, "With Brexit Looming, Young Activists Are Still Fighting to Stay in the European Union," 13 Mar. 2019 This Is Your Digital Life, thereby gaining access to their Facebook data, as well as the data on tens of millions of their friends. Issie Lapowsky, WIRED, "The Man Who Saw the Dangers of Cambridge Analytica Years Ago," 19 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thereby.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of thereby

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

Keep scrolling for more

Learn More about thereby

Statistics for thereby

Last Updated

17 Jun 2019

Look-up Popularity

Time Traveler for thereby

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

See more words from the same century

Keep scrolling for more

More Definitions for thereby



English Language Learners Definition of thereby

formal : by means of that act, those words, that document, etc.


there·​by | \ t͟her-ˈbī How to pronounce thereby (audio) \

Kids Definition of thereby

: by that He tripped and thereby lost the race.

Keep scrolling for more

More from Merriam-Webster on thereby

Rhyming Dictionary: Words that rhyme with thereby

Spanish Central: Translation of thereby

Nglish: Translation of thereby for Spanish Speakers

Britannica English: Translation of thereby for Arabic Speakers

Comments on thereby

What made you want to look up thereby? Please tell us where you read or heard it (including the quote, if possible).


a device or gadget

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!