Nonplusser

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Something which causes one to become nonplussed or confused. rare

    "This might have been a nonplusser to the average individual, but Siandish, already prepared, gave a ready reply."

Example

More examples

"This might have been a nonplusser to the average individual, but Siandish, already prepared, gave a ready reply."

Etymology

From nonplus (“to bewilder or perplex”) + -er.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.