Synonyms & Antonyms of extension
extension
1. (Noun) an additional part
- He built an extension to his house to create a home office.
Synonyms
addition
add-on
annex
attachment
supplement
accessory
adjunct
addendum
augmentation
appendage
appendix
wing
branch
arm
ell
2. (Noun) the act of making something longer or bigger
- The extension of the new highway will reduce travel time between the two cities.
Synonyms
expansion
enlargement
increase
widening
broadening
stretching
augmentation
enhancement
amplification
development
growth
deepening
heightening
continuation
elongation
lengthening
3. (Noun) an additional period of time
- lengthening continuation increase prolongation delay postponement
Synonyms
prolongation
lengthening
continuation
delay
postponement
increase
deferral
protraction
perpetuation
© 2025 bilexis. All rights reserved.