-atus

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See also: atus and -átus

Latin

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Etymology 1

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    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

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    -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
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    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
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    Descendants
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    Etymology 2

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    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

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    -ātus m

    1. Form of -tus appended to nouns
      triumvir + ‎-ātus → ‎triumvirātus
      episcopus + ‎-ātus → ‎episcopātus
      apostolus + ‎-ātus → ‎apostolātus
    Declension
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    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
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    Descendants
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