LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

perarduus

perarduus (feminine perardua, neuter perarduum)
Classical[pɛˈrar.du.ʊs]Ecclesiastical[peˈrar.du.us]

Meaning

  1. adjectivevery difficult

Declension

singular
formmasculinefeminineneuter
nominativeperarduusperarduaperarduum
genitiveperarduīperarduaeperarduī
dativeperarduōperarduaeperarduō
accusativeperarduumperarduamperarduum
ablativeperarduōperarduāperarduō
vocativeperardueperarduaperarduum
plural
formmasculinefeminineneuter
nominativeperarduīperarduaeperardua
genitiveperarduōrumperarduārumperarduōrum
dativeperarduīsperarduīsperarduīs
accusativeperarduōsperarduāsperardua
ablativeperarduīsperarduīsperarduīs
vocativeperarduīperarduaeperardua

pĕr-ardŭus, a, um, adj.,
I. very difficult: mihi autem hoc perarduum est demonstrare, Cic. Verr. 2, 3, 71, § 166.

Origins

From per- + arduus (“difficult, arduous”).

Quick answers

What does perarduus mean in Latin?
perarduus, a adjective, means “very difficult”.
How do you pronounce perarduus?
In classical Latin, [pɛˈrar.du.ʊs]; in ecclesiastical (church) Latin, [peˈrar.du.us].