Meanings
nounnonplusser (plural nonplussers)
plural nonplussers
- rareSomething which causes one to become nonplussed or confused.
This might have been a nonplusser to the average individual, but Siandish, already prepared, gave a ready reply.
1940, Sydney Horler, Tiger Standish Steps on It, London: H&S Services Yellow Jackets, published 1944, page 88
Origin
From nonplus (“to bewilder or perplex”) + -er.
Full word history & related roots →Cite this entry
APA
nonplusser. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/nonplusser
MLA
“nonplusser.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nonplusser. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “nonplusser,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/nonplusser.
Source: nonplusser on Wiktionary, CC BY-SA 4.0.