Where does “pagkatrato” come from?

pagkatrato (Bikol Central) comes from Bikol Central katrato, from Bikol Central trato, from Spanish trato, from Spanish tratar, from Latin tractāre, from Latin tractō, from Latin -tō, from Latin -tus — Derives action nouns from verb roots.

Ancestry of “pagkatrato”, step by step

pagkatrato traces back through two separate lines of ancestry.

via Bikol Central katrato

StepLanguageWordMeaning
1Bikol Centralkatrato
2Bikol Centraltrato
3Spanishtratodeal, bargain, agreement; treatment; behaviour
4Spanishtratarto treat; to address, to refer to as; to deal...
5Latintractāre
6Latintractōto tug, drag or haul
7Latin-tōForms here
8Latin-tusForms the past participle of verbs; Forms...
9Proto-Italic-tus
10Proto-Indo-European-tusDerives action nouns from verb roots

via Bikol Central pag

StepLanguageWordMeaning
1Bikol Centralpag
Every word from Proto-Indo-European -tus