verb (nonpluses or nonplusses, nonplussing, nonplussed)[with object]
- Surprise and confuse (someone) so much that they are unsure how to react: Diane was nonplussed by such an odd questionMore example sentences
- No doubt middle class people will be nonplussed by my compliance with the doctor's wishes.
- The boys are nonplussed by his invasion into their lives, to say the least.
- Alex walked out slowly, nonplussed by the lack of surprise at his arrival.
nounBack to top
late 16th century: from Latin non plus 'not more'. The noun originally meant 'a state in which no more can be said or done'.