LATIN DICTIONARYLexicon Latīnum
noun · masculinethird declension

impostor

impostor m (genitive impostōris)
Classical[ɪmˈpɔs.tɔr]Ecclesiastical[imˈpɔs.tor]

Meaning

  1. Late Latinmasculineimpostor

Declension

declension
formsingularplural
nominativeimpostorimpostōrēs
genitiveimpostōrisimpostōrum
dativeimpostōrīimpostōribus
accusativeimpostōremimpostōrēs
ablativeimpostōreimpostōribus
vocativeimpostorimpostōrēs

impostor (inp-), ōris, m. impono, II. B. 3.,
I. a deceiver, impostor (post-class.; cf.: planus, sycophanta), impostores aut mendaces aut litigiosi, Dig. 21, 1, 4, § 3; Hier. Ep. 38 fin.; 54, 5; Paul. Nol. Carm. 21, 338.

Origins

From earlier impositor, agent noun of impōnō.

Quick answers

What does impostor mean in Latin?
impostor, a noun, means “impostor”.
What is the genitive of impostor?
The genitive singular is impostōris. impostor is masculine, third declension.
How do you pronounce impostor?
In classical Latin, [ɪmˈpɔs.tɔr]; in ecclesiastical (church) Latin, [imˈpɔs.tor].