Where does “oscailteach” come from?

oscailteach (Irish) comes from Irish oscailte, from Irish oscailt, from Irish oscail, from Middle Irish osclaid, from Old Irish oslaicid — opens; lets loose, releases.

oscailteach (Irish): open, frank; open-handed; dehiscent

Definitions

  1. open, frank; open-handed; dehiscent

Ancestry of “oscailteach”, step by step

oscailteach traces back through two separate lines of ancestry.

via Irish oscailte

StepLanguageWordMeaning
1Irishoscailteopen; genitive singular of oscailt; past...
2Irishoscailtverbal noun of oscail; opening; first strip
3Irishoscailopen
4Middle Irishosclaid—
5Old Irishoslaicidopens; lets loose, releases

via Irish ách

StepLanguageWordMeaning
1IrisháchAlternative form of ach
2Old Irishachtbut; provided; inflection of aigid: ##...
3Proto-Celticextosexcept, but
4Proto-Indo-Europeaneǵʰsout; from, out of
Every word from Old Irish oslaicid →Every word from Middle Irish osclaid →Every word from Irish oscail →