Where does “kompidensiyal” come from?

kompidensiyal (Bikol Central) comes from Spanish confidencial, from Spanish -al, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

Ancestry of “kompidensiyal”, step by step

StepLanguageWordMeaning
1Spanishconfidencialconfidential
2Spanish-alIn adjectives, indicating relation; In nouns,...
3Latin-ālis
4Proto-Italic-ālisforms relational adjectives
Every word from Proto-Italic -ālisEvery word from Latin -ālisEvery word from Spanish -al