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Dictionary.com strives to enable and inspire connection, communication, learning, creativity, and expression in a world powered by words.

About
  • 1.5M

    social followers

  • 19M

    daily Word of the Day users

  • 70M

    monthly users

  • 100M+

    app downloads

  • 5.5B

    word searches annually

Dictionary.com is the world’s leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins. Dictionary.com’s main, proprietary source is the Random House Unabridged Dictionary, which is continually updated by our team of experienced lexicographers and supplemented with trusted, established sources including American Heritage and Harper Collins to support a range of language needs. Dictionary.com also offers a Word of the Day, a Synonym of the Day, word games and solvers, and a wealth of editorial content that benefit the advanced word lover and the English language student alike.

Language is constantly evolving, and the editorial offerings from Dictionary.com shine a light on how language is being used. From pop culture to idioms and grammar advice, there’s always something new to learn from Dictionary.com.

As the premier thesaurus on the web Thesaurus.com provides users with over 550,000 synonyms and a suite of tools that simplify the writing process. Thesaurus.com’s proprietary relevance, complexity, and length filters, introduced in the first update to any thesaurus in over 160 years, help anyone quickly find the perfect word.

About About

1999

About

May 1999

Word of the Day Launched

2004

About

December 2004

Acquired the Random House Unabridged Dictionary, the foundation of Dictionary.com’s proprietary dictionary

2008

About

May 2008

IAC acquired Dictionary.com

2009

About

January 2009

Surpassed 50 Million monthly users

2009

About

April 2009

First iOS app launched in the App Store

2010

About

February 2010

First Android app launched in the Google Play Store

2014

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March 2014

Surpassed 70 Million monthly users

2015

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July 2015

Surpassed 100 Million app downloads

2015

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Celebrated

20th Anniversary

2018

About

New Owner

Rock Holdings acquired Dictionary.com

2020

About

Explore our new look!

Our door is always open and we invite you into our world, where words live and come to life