verb (used with object), di·plo·ma·tized, di·plo·ma·tiz·ing.
  1. to use the techniques of diplomacy on.
Also especially British, di·plo·ma·tise.

Origin of diplomatize

First recorded in 1660–70; diplomat + -ize
Related formsdi·plo·ma·ti·za·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for diplomatize

Historical Examples of diplomatize