Definitions

1. adjective

having the same or nearly the same meaning as another word or phrase

“The words ‘bigger’ and ‘larger’ are synonymous in this context.”

2. noun

a word or phrase that has the same meaning as another word or phrase

“The synonyms for ‘happy’ include ‘joyful’ and ‘ecstatic’.”

3. verb

to have the same or nearly the same meaning as another word or phrase

“The two words are synonymous and can be used interchangeably.”