abnormal

The story

1. Proto-Indo-European*h₂ep
2. Proto-Indo-European*h₂epó
3. Proto-Italic*ap
4. Latinab
5. Latinab-
6. Englishab-
7. Proto-Indo-European*ǵneh₃-
8. Proto-Indo-European*ǵn̥h₃sḱéti
9. Proto-Hellenic*gignṓskō
10. Ancient Greekγιγνώσκω (gignṓskō)
11. Ancient Greekγνώμων (gnṓmōn)
12. Latinnorma
13. Proto-Indo-European*h₂el-
14. Proto-Indo-European*h₂élisder.?
15. Latinnōrmālis
16. Englishnormal
17. English todayabnormal

From ab- + normal. First attested in 1835, replacing the earlier anormal and even earlier abnormous, from Latin abnormis (“departing from normal”), from either ab- (“away from”) + norma (“rule, norm”), or Ancient Greek ἀνώμαλος (anṓmalos).

Words from the same roots

First known use, by meaning

• First attested around the mid 19ᵗʰ century. Not conforming to rule or system; deviating from the usual or normal type.
• First attested around the early 20ᵗʰ century. Of or pertaining to that which is irregular, in particular, behaviour that deviates from norms of social propriety or accepted standards of mental health.