Irish oscail

← Proto-Indo-European *leykʷ- (root)

← Middle Irish osclaid (inherited)

← Middle Irish oslaicid (mention)

← Old Irish as·oilgi (inherited)

← Old Irish ess- (mention)

← Old Irish od- (mention)

← Old Irish léicid (mention)

→ Irish athoscail (affix)

→ Scottish Gaelic fosgail (cognate)

→ Manx foshil (mention)