What does imperceptus mean in Latin?

imperceptus, a adjective, means “unperceived, undetected, unknown”.

How do you pronounce imperceptus?

In classical Latin, [ɪm.pɛrˈkɛp.tʊs]; in ecclesiastical (church) Latin, [im.perˈt͡ʃɛp.tus].

Proto-Indo-European *né → Proto-Indo-European *n̥- → Proto-Italic *n̥- → Latin imperceptus.

adjectivefirst/second-declension adjective

imperceptus (feminine impercepta, neuter imperceptum)

Classical[ɪm.pɛrˈkɛp.tʊs]Ecclesiastical[im.perˈt͡ʃɛp.tus]

singular
form	masculine	feminine	neuter
nominative	imperceptus	impercepta	imperceptum
genitive	imperceptī	imperceptae	imperceptī
dative	imperceptō	imperceptae	imperceptō
accusative	imperceptum	imperceptam	imperceptum
ablative	imperceptō	imperceptā	imperceptō
vocative	impercepte	impercepta	imperceptum

plural
form	masculine	feminine	neuter
nominative	imperceptī	imperceptae	impercepta
genitive	imperceptōrum	imperceptārum	imperceptōrum
dative	imperceptīs	imperceptīs	imperceptīs
accusative	imperceptōs	imperceptās	impercepta
ablative	imperceptīs	imperceptīs	imperceptīs
vocative	imperceptī	imperceptae	impercepta

imperceptus (inp-), a, um, adj. 2. in - perceptus,

I. unperceived, unknown (very rare): mendacia, Ov. M. 9, 711: minora majoribus imperceptiora sunt, more incomprehensible, Gell. 14, 1, 24.

Latin perceptus Latin imperceptus From in- (“un-”) + perceptus (“perceived, observed”).