Where does “customly” come from?
customly (English) comes from English custom, from Middle English custume, from Anglo-Norman custume, from Latin cōnsuētūdō, from Latin cōnsuēscō, from Latin suēscō, from Proto-Indo-European swe-dʰh₁-sk-, from Proto-Indo-European dʰeh₁- — to do, put, place.
customly (English): In a custom manner
Ancestry of “customly”, step by step