Synonyms of extension

extension

noun

ik-ˈsten(t)-shən 

1

as in stretching

the act of making longer

the board's extension of the school year drew howls of protest

Synonyms & Similar Words

• stretching
• prolongation
• lengthening
• elongation
• prolonging
• drawing out

Antonyms & Near Antonyms

• shortening
• curtailment
• abbreviation
• cutback
• abridgment

2

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

• addition
• annex
• wing
• penthouse
• arm
• ell

Example Sentences

Recent Examples of extension

That flexible room could become a nursery, a bedroom-suite extension or a workspace. — David Caraccio, Sacbee.com, 19 Sep. 2026

Barcenas, who signed a contract extension through 2028 this week, leads the Wave with six goals. — ABC News, 19 Sep. 2026

Image features include generation, upscaling, background and object removal, image extension, and text editing. — Stackcommerce Team, PC Magazine, 19 Sep. 2026

In politics—according to Berman and, by extension, Longwell—the most convincing arguments play to love, sympathy, greed, fear, and anger. — Isaac Arnsdorf, New Yorker, 18 Sep. 2026