The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Proto-Indo-European*kʷ-
- Proto-Indo-European*kʷos?
- Proto-Indo-European*kʷoider.?
- Proto-Italic*kʷāntos
- Latinquantus
- Proto-Indo-European*dʰeh₁-
- Proto-Italic*θakos
- Medieval Latinquantificō
- Englishquantify
- Englishquantifiable
- English todayunquantifiable
From un- + quantifiable.
Etymology from Wiktionary, CC BY-SA 4.0.