LATIN DICTIONARYLexicon Latīnum
noun · masculinethird declension

senior1

senior m (genitive seniōris)
Classical[ˈsɛ.ni.ɔr]Ecclesiastical[ˈsɛː.ni.or]

Meaning

  1. Medieval Latinmasculinea lord, sir
  2. Medieval Latinmasculinean abbot
  3. Medieval Latinmasculinea husband
  4. masculineold person, old man, older person, older man

Latīnē defined in Latin in our graded readers

senis comparātīvus
senior -ōris — in Aeneis, ch. 13

Declension

declension
formsingularplural
nominativeseniorseniōrēs
genitiveseniōrisseniōrum
dativeseniōrīseniōribus
accusativeseniōremseniōrēs
ablativeseniōreseniōribus
vocativeseniorseniōrēs

Charlton Lewis's shorter dictionary for students: the same scholarship in plain, modern definitions.

senior ōris,
comp. of senex.

Origins

Comparative of senex. Compare Old Irish siniu, Vedic Sanskrit सन्यस् (sányas).

Elsewhere
  • Catalansenyor
  • Italiansignore
  • Frenchseigneurfrom Old French seignor
  • Englishseigneurfrom Old French seignor
  • Frenchsieurfrom Old French sire
  • Frenchsirefrom Old French sire
  • Frenchmonsieurfrom Old French sire
  • Englishsirefrom Old French sire
  • Englishsirfrom Old French sire
  • Englishsaarfrom Old French sire
Borrowings
  • Englishsenior
  • Frenchsenior
  • Portuguesesénior
  • Portuguesesênior
  • Romaniansenior
  • Spanishsenior
  • Indonesianseniorfrom Dutch senior
  • Polishsenior
adjectivethird declension
senior2
senior (comparative, neuter senius)
Classical[ˈsɛ.ni.ɔr]Ecclesiastical[ˈsɛː.ni.or]

Meaning

  1. comparativecomparative degree of senex
  2. comparativeolder, elder; rather old

Declension

singular
formmasculinefeminineneuter
nominativeseniorseniorsenius
genitiveseniōrisseniōrisseniōris
dativeseniōrīseniōrīseniōrī
accusativeseniōremseniōremsenius
ablativeseniōre
seniōrī
seniōre
seniōrī
seniōre
seniōrī
vocativeseniorseniorsenius
plural
formmasculinefeminineneuter
nominativeseniōrēsseniōrēsseniōra
genitiveseniōrumseniōrumseniōrum
dativeseniōribusseniōribusseniōribus
accusativeseniōrēs
seniōrīs
seniōrēs
seniōrīs
seniōra
ablativeseniōribusseniōribusseniōribus
vocativeseniōrēsseniōrēsseniōra

sĕnĭor, ōris, v. senex.

Origins

Comparative of senex. Compare Old Irish siniu, Vedic Sanskrit सन्यस् (sányas).

Quick answers

What does senior mean in Latin?
senior, a noun, means “a lord, sir; an abbot; a husband”.
What is the genitive of senior?
The genitive singular is seniōris. senior is masculine, third declension.
How do you pronounce senior?
In classical Latin, [ˈsɛ.ni.ɔr]; in ecclesiastical (church) Latin, [ˈsɛː.ni.or].