Where does “foillsigid” come from?

foillsigid (Middle Irish) comes from Old Irish foilsigidir, from Old Irish follus, from Old Irish fo-, from Old Irish ad-, from Old Irish uss-, from Old Irish beirid, from Proto-Celtic bereti, from English beret — short.

Ancestry of “foillsigid”, step by step

StepLanguageWordMeaning
1Old Irishfoilsigidirto reveal, make public
2Old Irishfollusclear, evident
3Old Irishfo-sub-, under-
4Old Irishad-to, towards; in many compounds, it has a purely...
5Old Irishuss-up, off
6Old Irishbeiridto carry, bring; to bear; to give
7Proto-Celticberetito carry, bear; to flow
8EnglishberetA type of round, brimless cap with a soft top and...
9Frenchbéretberet
10Occitanberretcap
11Medieval Latinbirretum
12Late Latinbirrusa kind of cloak; large hooded cloak; hooded coat
13Gaulishbirrusshort cloak
14Proto-Celticbirrosshort

Words derived from “foillsigid

Every word from Proto-Celtic birrosEvery word from Gaulish birrusEvery word from Late Latin birrus