idem

• id. (abbreviation)

From Middle English idem, borrowed from Latin idem (“the same”).

• IPA^(key): /ˈɪ.dɛm/, /ˈaɪ.dɛm/

• Audio (Southern England):

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• Audio (Southern England):

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idem

1. The same.

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

• ditto
• ibidem, ibid.

• idem on Wikipedia.Wikipedia

• Demi, Diem, Dime, IMed, demi, demi-, dime, meid

• Audio:

  (file)

idem

1. idem, ditto

• meid

Borrowed from Latin idem.

• IPA^(key): /i.dɛm/

• Audio (France (Lyon)):

  (file)

idem

1. idem, likewise

   Synonym: id.

   pour moi c'est idem ― it's all the same to me

   • 1968, “Requiem pour un con”, Serge Gainsbourg (music), performed by Serge Gainsbourg:

     Pour moi c'est idem / Que ça te plaise ou non / J'te l'rejoue quand même / Pauvre con

     It's all the same to me / Whether you like it or not / I'll play it for you again anyway / You stupid idiot

• “idem”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012

• demi, dîme

Unadapted borrowing from Dutch idem, from Latin idem (“the same”).

• IPA^(key): /ˈɪ.dəm/, /ˈɪ.dɛm/

idem

1. idem

• “idem”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016

• demi

• IPA^(key): /ˈi.dem/^[1]
• Rhymes: -idem
• Hyphenation: ì‧dem

idem

1. ditto, and so, likewise, also

idem

1. ditto, the same

• dime, medi

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

From Proto-Italic *izdim; equivalent to 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 (so both parts are from the same source). The s was lost and the i lengthened by compensatory lengthening.^[2]

When is' ablative cases eōd, eād became eō, eā, idem's ablative true forms eōd-em, eād-em were interpreted as eō-dem, eā-dem. The neuter nominative singular id-em is natural. De verborum significatione gives emem as a form of the later eundem.[1] The new marker -dem then served to create totidem, tantundem, ibīdem, etc. Compare tam-en with its later doublet: tan-dem (← *tam-dem).

• (Classical Latin) IPA^(key): [ˈiː.dẽː], [ˈɪ.dẽː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈiː.dem]

īdem (feminine eadem, neuter idem); demonstrative pronoun (with m optionally → n in compounds) with an indeclinable portion

1. the same
   • 29 bc. Virgil. Georgics, III

     amor omnibus īdem

     Love is the same for all

   • 29 BCE – 19 BCE, Vergilius, Aeneis 4.678-679:

     “[...] Eadem mē ad fāta vocāssēs:
     īdem ambās ferrō dolor, atque eadem hōra tulisset.”

     “You should have called me to the same fate: Both of us could have been taken by the sword – the same pain, and at the same hour.”
     (Anna speaks to her dying sister, Dido.)

Irregular declension. Similar to the declension of is, ea, id. Demonstrative pronoun (with m optionally → n in compounds) with an indeclinable portion.

¹The nom./dat./abl. plural forms regularly developed into a monosyllable /iː(s)/, with later remodelling - compare the etymology of deus. This /iː/ was normally spelled as EI during and as II after the Republic; a disyllabic iī, spelled II, Iꟾ, appears in Silver Age poetry, while disyllabic eīs is only post-Classical. Other spellings include EEI(S), EIEI(S), IEI(S).
²The dat. singular is found spelled EIEI (here represented as ēī) and scanned as two longs in Plautus, but also as a monosyllable. The latter is its normal scansion in Classical. Other spellings include EEI, IEI.

• identidem
• identitās (see there for further derivatives)

• “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
• “idem”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (1894), Latin Phrase-Book‎^[2], 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, →ISBN

idem

1. (demonstrative) idem, ditto (the aforesaid, the same)

• “idem”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Borrowed from Latin idem.

idem

1. idem

idem (Cyrillic spelling идем)

1. first-person singular present of ići

• IPA^(key): /iɟem/, [ˈiɟem]
• Rhymes: -iɟem
• Hyphenation: i‧dem

idem

1. first-person singular present of ísť

Unadapted borrowing from Latin idem.

• IPA^(key): /ˈidem/ [ˈi.ð̞ẽm]
• Rhymes: -idem
• Syllabification: i‧dem

idem

1. alternative form of ídem

According to Royal Spanish Academy (RAE) prescriptions, unadapted foreign words should be written in italics in a text printed in roman type, and vice versa, and in quotation marks in a manuscript text or when italics are not available. In practice, this RAE prescription is not always followed.

• “idem”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025