Simple Definition of synonym
: a word that has the same meaning as another word in the same language
: a word, name, or phrase that very strongly suggests a particular idea, quality, etc.
Full Definition of synonym
1 : one of two or more words or expressions of the same language that have the same or nearly the same meaning in some or all senses
Examples of synonym in a sentence
I very much enjoyed the chapter on obscenity, which asks the difficult question of how words deemed taboo differ from their inoffensive synonyms… . It can't obviously be the referent of the term, since that is the same, and it isn't merely that the taboo words are more accurately descriptive … —Colin McGinn, The New York Review of Books, 27 Sept. 2007
The debris hurtled by so fast that the New York Times editorial page seemed to run out of synonyms for disgust, revulsion and abuse. —Michael Duffy et al., Time, 5 Mar. 2001
“Hollywood” is not, of course, a place. Nor is it a synonym for the entertainment business. There are upstanding citizens who make their living in that field. —P. J. O'Rourke, Republican Party Reptile , 1987
“Small” and “little” are synonyms.
Some differences between synonyms and antonyms
The English language (and, we may presume, many other languages) has both antonyms and synonyms. There are many more words with synonyms than there are words with antonyms, since many things exist which do not have an opposite (the word sandwich, for instance, may be said to have synonyms in the words hoagie, grinder, submarine, and many other words, but there is no opposite of sandwich). Antonym is also a much more recent addition to English than synonym is; it first appeared in the 1860s, whereas synonym has been used for more than 500 years. Additionally, both nouns have adjectival forms: synonymous and antonymous. Synonymous, which is often used loosely ("She has become synonymous with good taste"), is the more common of the two.
Origin of synonym
Middle English sinonyme, from Latin synonymum, from Greek synōnymon, from neuter of synōnymos synonymous, from syn- + onyma name — more at name
First Known Use: 15th century
SYNONYM Defined for Kids
Definition of synonym for Students
: a word having the same or almost the same meaning as another word in the same language
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