Word of the Day

From the Merriam-Webster Online Dictionary:

nonplussed

Main Entry: nonplus
Function: transitive verb
Inflected Form(s): nonplussed also nonplused \-ˈpləst\; nonplus·sing also nonplus·ing \-ˈplə-siŋ\
Date: 1591
: to cause to be at a loss as to what to say, think, or do : perplex
synonyms see puzzle

My sentence: After I told my boss I was leaving work today at noon and I wouldn't be there tomorrow, he was definitely nonplussed.