outnice

out- +‎ nice

outnice (third-person singular simple present outnices, present participle outnicing, simple past and past participle outniced)

1. (transitive, rare) To surpass in apparently nice behaviour; to make oneself seem nicer than.
   • 2008 February 1, Jeff Zeleny, “One on One in Debate, Democrats Set Aim at G.O.P.”, in New York Times‎:

     Still, it was almost as if the battle was to see which of them could outnice the other.

• counite, eutonic