(semantics, strictly) A word whose meaning is the same as that of another word. / (semantics, loosely) A word or phrase with a meaning that is the same as, or very similar to, another word or phrase.

plural of synonym

Archaic form of synonym.

(construed with with, narrower sense) Having an identical meaning. / (construed with with, broader sense) Having a similar meaning. / (construed with with) Of, or being a synonym.

plural of synonyme

(semantics) Of, relating to, or being a synonym.

The state of being a synonym.

In a synonymous way.

synonymic

(obsolete) synonymous