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Definition of synonymous

synonymous

/sɪˈnɑːnɪməs/
syn · on · y · mous

Adverb:synonymously
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synonymous Lexical Profile

synonymous Game Scores & Validity

• adjective

1

So closely associated with a particular quality, concept, or activity that mentioning one immediately evokes the other.

Example

"Over the decades, the Swiss watchmaker's name has become synonymous with precision craftsmanship."


2

Having the same or nearly the same meaning as another word or phrase in the same language.

Example

"In everyday conversation, the words 'start' and 'begin' are largely synonymous."


3

Designating two or more scientific names assigned to the same biological taxon, or genetic codons that specify the same amino acid.

Example

"A synonymous mutation alters a single DNA nucleotide without changing the resulting amino acid sequence of the protein."

Synonyms
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Antonyms
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Word Nuance & Usage

When linking one word or concept to another, 'synonymous' is almost always followed by the preposition 'with' rather than 'to' (e.g., 'synonymous with quality').

• Rhymes for synonymous

Word Origin & Etymology

Borrowed in the early 17th century from Medieval Latin synonymus, which came from Ancient Greek synōnymos ('having the same name'), formed from syn- ('together') and onyma ('name').

Cite this Entry


Wordmom. (2026). Definition of Synonymous. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/synonymous
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