German

Proper noun

Idem

1. A surname​, notably that of Josefa Idem

English

Adjective

idem ‎(not comparable)

1. The same.

Derived terms

• id. or id
• idempotence, idempotent

Usage notes

• Used almost exclusively in footnotes of academic or scholarly papers, especially those of the legal profession, to indicate that the source referred to in a footnote is the same as the source in the preceding footnote; usually abbreviated when so used.

Anagrams

• demi, Demi, dime, Dime

Dutch

Pronunciation

Adverb

idem

1. idem, ditto

Anagrams

• meid

French

Pronunciation

• IPA^(key): /i.dɛm/

Adverb

idem

1. idem, likewise

Anagrams

• demi, dîme

Italian

Pronunciation

• IPA^(key): /ˈidem/
• Hyphenation: ì‧dem

Adverb

idem

1. ditto, and so, likewise, also

Pronoun

idem

1. ditto, the same

Anagrams

• dime, medi

Latin

Alternative forms

• eidem (frequently in manuscripts and inscriptions)
• isdem, eisdem (rarely)^[1]

Etymology

From the pronoun is ‎(“he”) + Proto-Italic *-im ‎(emphatic marker) (whence Sabellic *-om, Oscan 𐌝𐌔𐌝𐌃𐌖𐌌 ‎(ísídum), 𐌄𐌔𐌝𐌃𐌖𐌌 ‎(esídum)), from Proto-Indo-European *im (whence also Old Latin im, em), accusative singular of *éy. The s was lost and the i lengthened by compensatory lengthening.^[2]

When the ablative cases eōd, eād became eō, eā, the true forms eōd-em, eād-em were interpreted as eō-dem, eā-dem. The neuter nominative singular id-em is natural and gives earlier emem (= later eundem). The new marker -dem then served to create totidem, tantumdem, ibīdem, etc. Compare tam-en with its later doublet: tan-dem (← *tam-dem).

Pronunciation

• (Classical) IPA^(key): /ˈiː.dem/, [ˈiː.dẽ]

Determiner

īdem m ‎(feminine eadem, neuter idem)

1. the same (usually with ablative)
   • 29 bc. Vergil. Georgics, III

     amor omnibvs idem

     Sex is the same for all of them [viz., every form of man, beast, aquatic or winged life, and livestock]

Inflection

Irregular declension. Similar to the declension of is, ea, id. Irregular: similar to first and second declensions, except for singular genitives ending in "-ius" and singular datives ending in "-ī".

See also

• is
• ea
• id

References

• idem in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• idem in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• Félix Gaffiot (1934), “idem”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
• Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
  • to hold the same views: idem sentire (opp. dissentire ab aliquo)
    
  • to agree with a person: consentire, idem sentire cum aliquo
    
  • to have the same meaning: idem valere, significare, declarare
    
  • synonyms: vocabula idem fere declarantia
    
  • to have the same political opinions: idem de re publica sentire
    
• Sihler, Andrew L. (1995) New Comparative Grammar of Greek and Latin, Oxford, New York: Oxford University Press

1. ↑ idem in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
2. ↑ De Vaan, Michiel (2008), “-dem”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, page 166

Portuguese

Pronoun

idem

1. (demonstrative) the aforesaid; ditto

Serbo-Croatian

Verb

idem ‎(Cyrillic spelling идем)

1. first-person singular present tense form of ići.