The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Italic*n̥-
- Latinin-
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*d(w)is-
- Proto-Italic*dis-
- Latindis-
- Proto-Indo-European*bʰer-
- Proto-Indo-European*bʰéreti
- Proto-Italic*ferō
- Latinferō
- Latindifferō
- Latindifferēns
- Latinindifferēns
- Old Frenchindifferent
- Englishindifferent
- English todayindifferentness
From indifferent + -ness.
Etymology from Wiktionary, CC BY-SA 4.0.