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synonymize

American  
[si-non-uh-mahyz] / sɪˈnɒn əˌmaɪz /
especially British, synonymise

verb (used with object)

synonymized, synonymizing
  1. to give synonyms for (a word, name, etc.); furnish with synonyms.


synonymize British  
/ sɪˈnɒnɪˌmaɪz /

verb

  1. (tr) to analyse the synonyms of or provide with synonyms

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of synonymize

First recorded in 1585–95; synonym + -ize