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 …

—Runner's World

synonymously adverb

Examples of synonymous in a Sentence

Recent Examples on the Web

And finally, if person A utters a needlessly wordy or detailed expression that is technically synonymous with a single term, person B may take A to implicate that the term does not apply to the person or event under discussion. — Encyclopedia Britannica, 22 Sep. 2026

And Italian identity is still — fortunately — synonymous with hospitality, dialogue and exchange, which are the conditions for cultivating intuitions, visions and innovations. — Martino Carrera, Footwear News, 21 Sep. 2026

Puffer coats are synonymous with winter, and barn jackets are the fall equivalent. — Jessie Quinn, PEOPLE, 20 Sep. 2026

During the pandemic, mRNA became almost synonymous with COVID-19 vaccines — and thus entangled with the mandates and restrictions that many Americans resented. — Sally C. Pipes, Chicago Tribune, 20 Sep. 2026

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