1. To impart to synonyms, by a specific use made of them, a shade of difference in the meaning, as between wave and billow, originally synonyms. See Synonym.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• sesynonymize,
• xesynonymize,
• cesynonymize,
• fesynonymize,
• resynonymize,
• eesynonymize,
• dwsynonymize,
• dssynonymize,
• ddsynonymize,
• drsynonymize,
• d4synonymize,
• d3synonymize,
• deaynonymize,
• desymonymize,
• desynonymise,
• Desynonimize,
• desymonymise,
• desynonimise,
• Dissynonymize,
• Denonymize

The plural form of "desynonymize" would be "desynonymizes".

The singular form of the word "Desynonymize" is "Desynonymization".