Thesaurus

extension

noun

Synonyms & Antonyms of extension

1 the act of making longer
  • the board's extension of the school year drew howls of protest

Synonyms for extension

Antonyms for extension

2 a smaller structure added to a main building
  • the new extension will connect the house with what is now a freestanding garage

Synonyms for extension

Words Related to extension

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Time Traveler for extension

Time Traveler

The first known use of extension was in the 15th century

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Cite this Entry

“Extension.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/ex-tension. Accessed 10 December 2019.

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More from Merriam-Webster on extension

Dictionary: Definition of extension

Rhyming Dictionary: Words that rhyme with extension

Medical Dictionary: Definition of extension

Spanish Central: Translation of extension

Nglish: Translation of extension for Spanish Speakers

Britannica English: Translation of extension for Arabic Speakers

Britannica.com: Encyclopedia article about extension

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