synonymous

adjective

syn·​on·​y·​mous sə-ˈnä-nə-məs 

1

: having the character of a synonym

also : alike in meaning or significance

2

: having the same connotations, implications, or reference

to runners, Boston is synonymous with marathon

—Runners World

synonymously adverb

Examples of synonymous in a Sentence

Recent Examples on the Web

Because of this, the M name has become synonymous with German performance. —Bryan Hood, Robb Report, 3 Oct. 2025

For more than two decades, October 3rd was synonymous with Mean Girls Day, but Swifties worldwide will agree that it has now been eclipsed by the release of The Life of a Showgirl. —Lauren Brown West-Rosenthal, Parents, 3 Oct. 2025

Now her cascading platinum locks, which were as synonymous with Anderson’s look as her trademark smoky eyes and lip-liner, are a thing of the past. —Leah Dolan, CNN Money, 2 Oct. 2025

For the past 60+ years, the name NASA has been synonymous with humanity’s vision to dream about horizons far beyond the bounds of our terrestrial worries. —Ethan Siegel, Big Think, 1 Oct. 2025

Word History

First Known Use

1610, in the meaning defined at sense 1

Rhymes for synonymous

• anonymous
• autonomous
• economise
• eponymous

Kids Definition

synonymous

adjective

syn·​on·​y·​mous sə-ˈnän-ə-məs 

1

: alike in meaning

2

: suggesting the same thing

a brand name that is synonymous with quality

synonymously adverb

Etymology

from Latin synonymus "synonymous," from Greek synōnymos, literally, "having the same name," from syn- "together, along with" and onyma, onoma "name" — related to anonymous, symposium, synagogue, synchronous