-atus

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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. Compare -ītus, -ūtus.

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

Suffix

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

  1. -ed. Used to form adjectives from nouns indicating the possession of a thing or feature.
    ‎barba (“beard”) + ‎-ātus → ‎barbātus (“bearded, having a beard”)
    ‎caetra (“a type of short Spanish shield”) + ‎-ātus → ‎caetrātus (“armed with a caetra”)
    ‎toga (“toga”) + ‎-ātus → ‎togātus (“wearing a toga, clad in a toga”)
  2. Used to form adjectives from other adjectives, especially color names, with the sense "wearing [adjective](-colored) clothes".
    ‎albus (“white”) + ‎-ātus → ‎albātus (“clothed in white”)
    ‎āter (“black”) + ‎-ātus → ‎atrātus (“clothed in black”)
    ‎sordidus (“unclean, sordid”) + ‎-ātus → ‎sordidātus (“in dirty clothes, shabbily dressed”)
  3. -like, -ate. Used to form adjectives from nouns indicating a resemblance or likeness to the noun.
    ‎rēticulum (“small net”) + ‎-ātus → ‎rēticulātus (“reticulated, net-like”)
    ‎vir (“man”) + ‎-ātus → ‎virātus (“manly, manful”)
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 terms suffixed with -atus (adjective)
Descendants

Etymology 2

Formed by rebracketing of action nouns in -tus, -tūs formed from the perfect passive participle of first conjugation verbs, such as mercātus (mercor + -tus) or pecūlātus (peculor + -tus), where -ā- is actually part of the stem; from Proto-Italic *-tus, from Proto-Indo-European *-tus (suffix deriving action nouns from verb roots).

Suffix

-ātus m

  1. 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 terms suffixed with -atus (abstract noun)
Descendants
Wikious
Boobota
Sagapedia