EXTENSION Synonyms: 18 Similar and Opposite Words

extension

noun

ik-ˈsten(t)-shən

Definition of extension

as in stretching

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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in addition

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

Synonyms & Similar Words

Example Sentences

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.

Recent Examples of extension With its extension, the monument will be around for several key dates — Labor Day, the 25th anniversary of the September 11, 2001, terrorist attacks and Veterans Day. — Mike Stunson, USA Today, 28 Aug. 2026 The 5,000 sailors and Marines on board have been working sustained combat operations, dealing with extension after extension and unreliable access to food, basic hygiene supplies, and mail. — Andrea N. Goldstein, The Atlantic, 28 Aug. 2026 Of that group, 630 owners were cleared because their 2025 tax returns listed the property as their primary home address; another 580 were cleared using a mix of 2025 extension filings and 2024 returns. — Catherina Gioino, Fortune, 28 Aug. 2026 The partners will work together for an initial three years, with an extension possible based on research results. — Aamir Khollam, Interesting Engineering, 28 Aug. 2026 See All Example Sentences for extension

Recent Examples of Synonyms for extension

Noun

Cardio, strength training and stretching have long been the go-to approaches for optimizing health span and lifespan.

— Deborah Vankin, Los Angeles Times, 24 Aug. 2026
As long hours spent in the same position can contribute to poor posture, stiffness and other physical issues, experts say regular movement and stretching can help prevent joint pain and muscle weakness.

— Angelica Stabile, FOXNews.com, 21 Aug. 2026

Definition of stretching

Noun

With key draft additions filling secondary gaps alongside veteran pass rushers upfront, even a middle-of-the-pack defensive performance would drastically change Dallas' game-to-game outlook.

— David Troy OutKick, FOXNews.com, 26 Aug. 2026
The addition of Victory+ had been designed in part to accommodate the NWSL’s growing inventory after expansion to 16 teams increased the regular-season schedule from 182 matches in 2025 to 240 this year.

— Asli Pelit, New York Times, 26 Aug. 2026

Definition of addition

Browse Nearby Words

extends (out)

extension

extensions

See all Nearby Words

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Style

“Extension.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/extension. Accessed 1 Sep. 2026.

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Synonyms of extension

noun

Example Sentences

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