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From Proto-Indo-European *h₂élyos, from *h₂el- ‎(beyond, other). Cognates include Ancient Greek ἄλλος ‎(állos) (Modern Greek αλλιώς ‎(alliós)), αἶλος ‎(aîlos) (Arcadocypriot), Old Armenian այլ ‎(ayl), Proto-Celtic *alyos, Gothic 𐌰𐌻𐌾𐌹𐍃 ‎(aljis), Old Irish aile, Old English elles, English else, Breton eil, Welsh all-, Cornish yl, Gaulish allos (in La Graufesenque), Proto-Germanic *aljaz, Swedish eljest, Danish ellers, Norwegian ellers. Other forms from Proto-Indo-European *h₂el- include Latin ille and uls.


Pronominal adjective[edit]

alius m ‎(feminine alia, neuter aliud); first/second declension

  1. other, another
  2. else

Usage notes[edit]

  • When used in pairs, alius...alius may function like English one...another.
  • When used in pairs, aliī...aliī may function like English some...others.


Irregular declension. Regular genitive singular, alīus, is rare, being normally supplied by alterīus, the genitive of alter, instead.[1]

Number Singular Plural
Case \ Gender Masculine Feminine Neuter Masculine Feminine Neuter
nominative alius alia aliud aliī aliae alia
genitive alīus alīus alīus aliōrum aliārum aliōrum
dative aliī aliī aliī aliīs aliīs aliīs
accusative alium aliam aliud aliōs aliās alia
ablative aliō aliā aliō aliīs aliīs aliīs
vocative alie alia aliud aliī aliae alia

Derived terms[edit]

See also[edit]


  • alius” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.