Where does “spiritworld” come from?

spiritworld (English) comes from English spirit, from Middle English spirit, from Irish -óg, from Old Irish -óc, from Proto-Brythonic -ọg, from Proto-Celtic -ākos, from Proto-Indo-European -eh₂ḱos, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

Ancestry of “spiritworld”, step by step

spiritworld traces back through two separate lines of ancestry.

via English spirit

StepLanguageWordMeaning
1EnglishspiritThe soul of a person or other creature. What...
2Middle Englishspiritlife, vital breath
3Irish-ógused to form diminutives of nouns, or substantive...
4Old Irish-ócDiminutive suffix
5Proto-Brythonic-ọgForms nouns/adjectives from other nouns and...
6Proto-Celtic-ākosForms adjectives from nouns and adjectives with...
7Proto-Indo-European-eh₂ḱos
8Proto-Indo-European-kosCreates deadjectival and desubstantival...

via English World

StepLanguageWordMeaning
1EnglishWorldThe specific world, or any of several specific constituent worlds, that humans live in, among any other (real or possible) worlds
2Middle EnglishworldThe world, the planet; A dimension, realm, or...
3Old Englishweoroldworld
4Proto-West Germanicweraldiworld
5Proto-Germanicweraldizlifetime, worldly existence; mankind; world
6Proto-Germanicwerazman; husband
7Proto-Indo-EuropeanwiHrósman; husband; warrior, hero
8Proto-Indo-Europeanweyh₁-to chase, pursue; to suppress, persecute
Every word from Proto-Indo-European -kosEvery word from Irish -ógEvery word from Proto-Celtic -ākos