The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Italic*n̥-
- Latinin-
- Middle Englishin-
- Englishir-
- Proto-Italic*wre-
- Latinre-
- Old Frenchre-
- Middle Englishre-
- Englishre-
- Englishpress
- Englishrepress
- Englishrepressible
- English todayirrepressible
From ir- + repressible.
Etymology from Wiktionary, CC BY-SA 4.0.