soi-bhéas
Definitions (by source)
m., good custom; in pl. good manners, morals.
Stories from Keating's History of Ireland. Editor: Osborn Bergin.
m., good custom, manner;--pl. –a, 1468; gen. 6348; dat. 1567
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.