nocturnus

Latin

From nox (“night”, oblique stem: noct-) +‎ -urnus (suffix forming adjectives), on the analogy of diurnus.

nocturnus (feminine nocturna, neuter nocturnum); first/second-declension adjective

First/second-declension adjective.

	masculine	feminine	neuter	masculine	feminine	neuter
	singular			plural
nominative	nocturnus	nocturna	nocturnum	nocturnī	nocturnae	nocturna
genitive	nocturnī	nocturnae	nocturnī	nocturnōrum	nocturnārum	nocturnōrum
dative	nocturnō	nocturnae	nocturnō	nocturnīs
accusative	nocturnum	nocturnam	nocturnum	nocturnōs	nocturnās	nocturna
ablative	nocturnō	nocturnā	nocturnō	nocturnīs
vocative	nocturne	nocturna	nocturnum	nocturnī	nocturnae	nocturna

Italian: notturno
- → English: notturno
Mirandese: noturno
Piedmontese: noturn
Sardinian: noturnu
Spanish: *nochorno
- ⇒ *nochorniego, nocharniego
→ Catalan: nocturn
→ Old High German: nuohturn
- Middle High German: nüehtern, nüchtern, nüchtarn, nüchter
  - German: nüchtern
  - Hunsrik: nichter
→ Old French: notorne
→ French: nocturne (learned)
- → English: nocturne
- → Romanian: nocturn
- → Russian: ноктю́рн (noktjúrn)
→ Friulian: noturni
→ Galician: nocturno (learned)
→ Portuguese: noturno (learned)
→ Spanish: nocturno (learned)