Where does “tachyphrenia” come from?

tachyphrenia (English) comes from English tachy, from English tachy-, from Ancient Greek ταχύς, from Proto-Indo-European dʰn̥gʰ-, from Proto-Indo-European dʰengʰ- — to cover; to overcast.

tachyphrenia (English): unusually rapid thought; mental hyperactivity

Definitions

  1. unusually rapid thought; mental hyperactivity

Ancestry of “tachyphrenia”, step by step

StepLanguageWordMeaning
1EnglishtachyTachycardia; Tachypnoea
2Englishtachy-fast
3Ancient Greekταχύςswift, quick, fast, rapid; In a short time: soon
4Proto-Indo-Europeandʰn̥gʰ-—
5Proto-Indo-Europeandʰengʰ-to cover; to overcast
Every word from Proto-Indo-European dʰengʰ- →Every word from Proto-Indo-European dʰn̥gʰ- →Every word from Ancient Greek ταχύς →