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*kap-
- Proto-Indo-European*kapyéti
- Proto-Indo-European*kaptós
- Proto-Italic*kaptos
- Latincaptus
- Vulgar Latin*captiāre
- Old Frenchchacier
- Anglo-Normancachier
- Middle Englishcacchen
- Englishcatch
- Englishcatchable
- English todayuncatchable
Etymology from Wiktionary, CC BY-SA 4.0.