bríoghmhar
Definitions (by source)
‘efficacious’ (used of God’s Word) 36.4-5
Aibidil Gaoidheilge & Caiticiosma: Seaán Ó Cearnaigh's Irish primer of religion, published in 1571. Editor: Brian Ó Cuív.
vigorous, energetic, 5564
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.