The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*keh₂n-
- Proto-Indo-European*kh₂néti
- Proto-Italic*kanō
- Latincanō
- Latinaccinō
- Ancient Greekπροσῳδῐ́ᾱ (prosōidĭ́ā)
- Medieval Latinaccentus
- Middle Frenchaccent
- Anglo-Normanaccent
- Middle Englishaccent
- Englishaccent
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- Englishaccentless
- English todayaccentlessness
From accentless + -ness.
Etymology from Wiktionary, CC BY-SA 4.0.