-atus

See also: atus and -átus

Latin

Etymology 1

From Proto-Italic *-ātos, from Proto-Indo-European *-eh₂tos. A "pseudo-participle" possibly related to -tus, though similar formations in other Indo-European languages show that it was distinct from it already in Indo-European times.

Cognate to Proto-Slavic *-atъ, Proto-Germanic *-ōdaz (English -ed (“having”)).

Suffix

-ātus (feminine -āta, neuter -ātum); first/second-declension suffix

2. -ed, -ate, -like. Used to form adjectives from nouns indicating the possession of a thing or a quality.

   barba (“beard”) → barbātus (“bearded, having a beard”)

   rēticulum (“small net”) → rēticulātus (“reticulated, net-like”)

   albus (“white”) → albātus (“clothed in white”)

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	-ātus	-āta	-ātum		-ātī	-ātae	-āta
Genitive	-ātī	-ātae	-ātī		-ātōrum	-ātārum	-ātōrum
Dative	-ātō		-ātō		-ātīs
Accusative	-ātum	-ātam	-ātum		-ātōs	-ātās	-āta
Ablative	-ātō	-ātā	-ātō		-ātīs
Vocative	-āte	-āta	-ātum		-ātī	-ātae	-āta

Derived terms

► Latin words suffixed with -atus

• -āticus, -āticum
• -ātim
• -ātiō

Descendants

• Asturian: -áu, -ada
• Catalan: -at, -ada
• → English: -ate, -ade
• French: -é, -ée, -ade (from Italian or Occitan)
• Friulian: -ât, -ade
• Galician: -ado
• → German: -at
• Italian: -ato
• Occitan: -at
• Portuguese: -ado, -ada
• Romanian: -at, -ată
• Spanish: -ado, -ada
• Sicilian: -atu, -ata
• → Portuguese: -ato
• → Spanish: -ato

Etymology 2

By rebracketing of action nouns in -tus, -tūs formed from first conjugation verbs, such as mercātus (mercor + -tus) or pecūlātus (peculor + -tus), where -ā- is actually part of the stem.

Suffix

-ātus m

2. Form of -tus appended to nouns

   ‎triumvir + ‎-ātus → ‎triumvirātus

   ‎episcopus + ‎-ātus → ‎episcopātus

   ‎apostolus + ‎-ātus → ‎apostolātus

Declension

Fourth-declension noun.

Case	Singular	Plural
Nominative	-ātus	-ātūs
Genitive	-ātūs	-ātuum
Dative	-ātuī	-ātibus
Accusative	-ātum	-ātūs
Ablative	-ātū	-ātibus
Vocative	-ātus	-ātūs

Derived terms

► Latin words suffixed with -atus (abstract noun)

Descendants

• French: -at
• Portuguese: -ado