Nonplus

Origin

From Latin nōn plūs ("no more, no further")

Full definition of nonplus

Noun

1. A state of perplexity or bewilderment.
• 1603, John Florio, trans. Michel de Montaigne, Essays, I.46:altering Vaudemont, to Vallemontanus, and metamorphosing them, by suting them to the Græcian or Latin tongue, we know not what to make of them, and are often at a non-plus.
• SouthBoth of them are a perfect nonplus and baffle to all human understanding.

Verb

1. (transitive) to perplex or bewilder someone; to confound or flummox

Derived terms

• nonplussed