Where does “doctrine” come from?

doctrine (Old French) comes from Latin doctrina, from Latin doctor, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

Ancestry of “doctrine”, step by step

StepLanguageWordMeaning
1Latindoctrinateaching, instruction; doctrine; learning,...
2Latindoctorteacher, instructor; catechist
3Latin-tor-er
4Proto-Italic-tōrForms agent nouns to verb stems
5Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
6Proto-Indo-European-tor-s—

Words derived from “doctrine”

Every word from Proto-Indo-European -tor-s →Every word from Latin -tor →Every word from Latin doctor →