Where does “sonĝaĉo” come from?

sonĝaĉo (Esperanto) comes from Esperanto sonĝo, from French songe, from Old French songe, from Latin somnium, from Latin somnus, from Proto-Italic swepnos, from Proto-Indo-European swépnos, from Proto-Indo-European swopnos — to sleep.

sonĝaĉo (Esperanto): nightmare

Definitions

  1. nightmare

Ancestry of “sonĝaĉo”, step by step

StepLanguageWordMeaning
1Esperantosonĝodream
2Frenchsongedream
3Old Frenchsongedream
4Latinsomniumdream, vision; fantasy, daydream
5Latinsomnussleep; drowsiness, slumber sloth, idleness; death
6Proto-Italicswepnos
7Proto-Indo-Europeanswépnossleep, slumber
8Proto-Indo-Europeanswopnosdream
9Proto-Indo-Europeanswep-to sleep
Every word from Proto-Indo-European swep-Every word from Proto-Indo-European swopnosEvery word from Proto-Indo-European swépnos