Where does “incredibilis” come from?
incredibilis (Latin) comes from Latin crēdibilis, from Latin crēdō, from Proto-Italic krezdō, from Proto-Indo-European ḱréddʰh₁eti, from Proto-Indo-European -dʰh₁eti, from Proto-Indo-European dʰeh₁- — to do, put, place.
Ancestry of “incredibilis”, step by step