Where does “soutillier” come from?

soutillier (Old French) comes from Old French sotil, from Latin subtīlis, from Latin tēla, from Old Dutch tegela, from Proto-Germanic *tigulā, from Proto-Germanic tigulǭ, from Latin tēgula, from Latin tegō — to cover; pole, stick, beam.

Ancestry of “soutillier”, step by step

soutillier traces back through two separate lines of ancestry.

via Old French sotil

StepLanguageWordMeaning
1Old Frenchsotil
2Latinsubtīlisfine, thin, slender
3Latintēlaweb
4Old Dutchtegela
5Proto-Germanic*tigulā
6Proto-Germanictigulǭtile; brick
7Latintēgulaa large, flat and heavy roof tile used in an overlapping formation with the curved and smaller imbrex
8Latintegōto cover; to clothe
9Proto-Italictegōcover
10Proto-Indo-European(s)teg-to cover; pole, stick, beam

via Late Latin subtiliare

StepLanguageWordMeaning
1Late Latinsubtiliarepresent active infinitive of subtīliō
Every word from Proto-Indo-European (s)teg-Every word from Proto-Italic tegōEvery word from Latin tegō