Iunius

• iūnius, Jūnius, jūnius

From Iūnō + -ius.

• (Classical Latin) IPA^(key): [ˈjuː.ni.ʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈjuː.ni.us]

Iūnius (feminine Iūnia, neuter Iūnium); first/second-declension adjective

1. Of the Junian gens
2. of June

In Classical Latin, month names were regularly used as adjectives, generally modifying a case-form of mēnsis m sg (“month”) or of one of the nouns used in the Roman calendar to refer to specific days of the month from which other days were counted: Calendae f pl (“calends”), Nōnae f pl (“nones”), Īdūs f pl (“ides”). However, the masculine noun mēnsis could be omitted by ellipsis, so the masculine singular forms of month names eventually came to be used as proper nouns.^[1]

The accusative plural adjective forms Aprīlīs, Septembrīs, Octōbrīs, Novembrīs, Decembrīs^[2] are ambiguous in writing, being spelled identically to the genitive singular forms of the nouns; nevertheless, the use of ablative singular forms in -ī and comparison with the usage of other month names as adjectives supports the interpretation of -is as an accusative plural adjective ending in Classical Latin phrases such as "kalendas Septembris".^[3]

First/second-declension adjective.

Iūnius m (genitive Iūniī or Iūnī); second declension

1. Junius; a Roman nomen gentile, gens or "family name".
2. June (short for mēnsis Iūnius)

Second-declension noun.

¹Found in older Latin (until the Augustan Age).

Unsorted borrowings

These borrowings are ultimately but perhaps not directly from Latin. They are organized into geographical and language family groups, not by etymology.

• Roman calendar on Wikipedia.Wikipedia