from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To analyze or provide the synonyms of (words or a word).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To express by a synonym or synonyms.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To express by a synonym or synonyms; to give the synonym or synonyms corresponding to.
from The Century Dictionary and Cyclopedia
- To express by words of the same meaning; express the meaning of by an equivalent in the same or another language. Also spelled synonymise.
synonym + -ize (Wiktionary)