antireal

The story

1. Proto-Indo-European*h₂ent-
2. Proto-Indo-European*h₂énts
3. Proto-Indo-European*h₂énti
4. Ancient Greekᾰ̓ντῐ́ (ăntĭ́)
5. Ancient Greekἀντι- (anti-)
6. Englishanti-
7. Proto-Indo-European*(H)reh₁-
8. Proto-Indo-European*(H)reh₁ís
9. Proto-Italic*reis
10. Classical Latinrēs
11. Proto-Indo-European*h₂el-
12. Proto-Indo-European*h₂élisder.?
13. Late Latinreālis
14. Old Frenchree
15. Middle Englishreal
16. Englishreal
17. English todayantireal

From anti- + real.