Where does “antihypnotic” come from?

antihypnotic (English) comes from English hypnotic, from French hypnotique, from Latin hypnōticus, from Ancient Greek ὑπνωτικός, from Ancient Greek ὑπνῶ, from Ancient Greek Ὕπνος, from Proto-Hellenic húpnos, from Proto-Indo-European supnós — to sleep.

antihypnotic (English): Tending to prevent sleep; Any agent that prevents...

Definitions

  1. Tending to prevent sleep; Any agent that prevents...

Ancestry of “antihypnotic”, step by step

antihypnotic traces back through two separate lines of ancestry.

via English hypnotic

StepLanguageWordMeaning
1EnglishhypnoticOf, or relating to hypnosis or hypnotism;...
2Frenchhypnotiquehypnotic; sleeping pill
3Latinhypnōticusof or pertaining to sleep
4Ancient Greekὑπνωτικόςinclined to sleep, sleepy; inducing sleep,...
5Ancient GreekὑπνῶI put to sleep
6Ancient GreekὝπνοςHypnos, the Greek mythological god of sleep
7Proto-Hellenichúpnos
8Proto-Indo-Europeansupnóssleep; death
9Proto-Indo-Europeanswóp-r̥ ~ swép-n̥s
10Proto-Indo-Europeanswep-to sleep

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European swep-Every word from Proto-Indo-European swóp-r̥ ~ swép-n̥sEvery word from Proto-Indo-European supnós