nonplus Meaning, Definition & Usage

  1. verb be a mystery or bewildering to
    mystify; perplex; bewilder; get; beat; puzzle; pose; amaze; vex; baffle; flummox; stick; stupefy; gravel; dumbfound.
    • This beats me!
    • Got me--I don't know the answer!
    • a vexing problem
    • This question really stuck me

WordNet

Non"plus noun
Etymology
L. non not + plus more, further. See Plural.
Definitions
  1. A state or condition which daffles reason or confounds judgment; insuperable difficalty; inability to proceed or decide; puzzle; quandary.
    Both of them are a perfect nonplus and baffle to all human understanding. South.
Non"plus` transitive verb
Wordforms
imperfect & past participle Nonplused or Nonplussed; present participle & verbal noun Nonplusing or Nonplussing
Definitions
  1. To puzzle; to confound; to perplex; to cause to stop by embarrassment.
    He has been nonplused by Mr. Dry's desiring him to tell what it was that he endeavored to prove. Spectator.

Webster 1913