Where does “docile” come from?

docile (Middle French) comes from Latin docilis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

Ancestry of “docile”, step by step

StepLanguageWordMeaning
1Latindocilisdocile, teachable; manageable, tractable;...
2Latin-ilis-ile
3Proto-Italic-elis—
4Proto-Indo-European-elis—
5Proto-Indo-European-lósForms agent nouns from verbal roots
Every word from Proto-Indo-European -lós →Every word from Latin -ilis →Every word from Latin docilis →