The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*dwís
- Ancient Greekδιά (diá)
- Ancient Greekδια- (dia-)
- Proto-Indo-European*krey-
- Proto-Indo-European*krinyéti
- Proto-Hellenic*kríňňō
- Ancient Greekκρῑ́νω (krī́nō)
- Ancient Greekκρῐ- (krĭ-)
- Ancient Greekκρῐτής (krĭtḗs)
- Ancient Greekκριτικός (kritikós)
- Ancient Greekδῐᾰκρῐτῐκός (dĭăkrĭtĭkós)
- English todaydiacritic
Learned borrowing from Ancient Greek διακριτικός (diakritikós, “distinguishing, separative”), from διακρῑ́νω (diakrī́nō, “to distinguish, separate”), from δια- (dia-, “between”) + κρῑ́νω (krī́nō, “I separate, distinguish”).
Etymology from Wiktionary, CC BY-SA 4.0.