Having looked it up, no dictionary I can find lists a definition for a hypothetical adjective ❌ deitous. So I was wondering whether by attempting to use ‑ous I perhaps had added the ‘wrong’ suffix to deity in order to convert the noun into its corresponding derived adjective.

This is more of a pedantic question, but just out of curiosity, does anyone know of a word like what I’m describing, an adjectival form corresponding to deity?