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

  1. -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)
Inflection

First/second declension.

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 -ātae -ātō -ātīs -ātīs -ātīs
Accusative -ātum -ātam -ātum -ātōs -ātās -āta
Ablative -ātō -ātā -ātō -ātīs -ātīs -ātīs
Vocative -āte -āta -ātum -ātī -ātae -āta
Derived terms
<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Latin_words_suffixed_with_-atus' title='Category:Latin words suffixed with -atus'>Latin words suffixed with -atus</a>
Descendants

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

  1. Form of -tus appended to nouns
    triumvir + -ātustriumvirātus
    episcopus + -ātusepiscopātus
    apostolus + -ātusapostolātus
Inflection

Fourth declension.

Case Singular Plural
Nominative -ātus -ātūs
Genitive -ātūs -ātuum
Dative -ātuī -ātibus
Accusative -ātum -ātūs
Ablative -ātū -ātibus
Vocative -ātus -ātūs
Derived terms
<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Latin_words_suffixed_with_-atus_(abstract_noun)' title='Category:Latin words suffixed with -atus (abstract noun)'>Latin words suffixed with -atus (abstract noun)</a>
Descendants
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