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*(H)reh₁-
- Proto-Indo-European*(H)reh₁ís
- Proto-Italic*reis
- Classical Latinrēs
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Late Latinreālis
- Old Frenchree
- Middle Englishreal
- Englishreal
- Englishrealize
- Englishrealizable
- English todayunrealizable
From un- + realizable.
Etymology from Wiktionary, CC BY-SA 4.0.