idem

Same source, Latin

Idem is a Latin term meaning "the same," used in scholarly and legal writing to avoid repetition when citing the same source or author consecutively.

It typically appears abbreviated as "id." in footnotes and bibliographies.

The data appears in Smith (2019); idem discusses the methodology in chapter three.

In legal citations, it refers back to the immediately preceding authority, saving space and reducing redundancy.

sameness

same

Identical in nature

carbon copy · facsimile · replica · twin · doppelganger · mirror · match · counterpart · clone · reproduction

Latin

ditto

Word meaning "same"

  • ibidSame place, abbreviated
  • ibidemIn the aforementioned place
  • sicQuoted verbatim indicator

supra · infra · passim · et al · viz

legal

precedent

Prior authoritative example

aforesaid · said · foregoing · above-named

repetition

ditto

Word meaning "same"

reiterate · echo · restate · reaffirm · unchanged

Opposites
sameness vs. difference of source

idemalter

Make a modification

cf. · contra · compare · see also

repetition vs. novelty

idemdifferent

Not the same

other · another · new · distinct · alternative

Phrases
Family

identity, identify, identical, ideation, ideate, identifier, eidetic

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