LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

efferus

efferus (feminine effera, neuter efferum)
Classical[ˈɛf.fɛ.rʊs]Ecclesiastical[ˈɛf.fe.rus]

Meaning

  1. adjectivevery wild, fierce, savage

Declension

singular
formmasculinefeminineneuter
nominativeefferusefferaefferum
genitiveefferīefferaeefferī
dativeefferōefferaeefferō
accusativeefferumefferamefferum
ablativeefferōefferāefferō
vocativeeffereefferaefferum
plural
formmasculinefeminineneuter
nominativeefferīefferaeeffera
genitiveefferōrumefferārumefferōrum
dativeefferīsefferīsefferīs
accusativeefferōsefferāseffera
ablativeefferīsefferīsefferīs
vocativeefferīefferaeeffera

ef-fĕrus, a, um, adj.,
I. very wild, fierce, savage (poet. and post-class.; freq. in Verg.): proles, Lucr. 2, 604; cf. juventus, Verg. A. 8, 6: Dido, id. ib. 4, 642: Chimaera, id. ib. 7, 787: mens Caci, id. ib. 8, 205; cf.: vis animi, id. ib. 10, 898: corda, Val. Fl. 1, 798: ira, id. 5, 517: virtus Bebrycis, id. 2, 648: facta tyranni, Verg. A. 8, 484: facinus, Sen. Phoen. 264; Flor. 4, 12, 12; 4, 12, 48; Sen. Element. 1, 13, 4.

Origins

  1. Proto-Indo-European*h₁éǵʰs
  2. Proto-Italic*eks
  3. Latinefferus

Latin ex- Latin ferus Latin efferus From ex- + ferus (“wild”).

Quick answers

What does efferus mean in Latin?
efferus, a adjective, means “very wild, fierce, savage”.
How do you pronounce efferus?
In classical Latin, [ˈɛf.fɛ.rʊs]; in ecclesiastical (church) Latin, [ˈɛf.fe.rus].
Where does efferus come from?
Proto-Indo-European *h₁éǵʰs → Proto-Italic *eks → Latin efferus.