ABAIRTÍ
IN ENGLISH—IRISH DICTIONARY
It is of capital importance, tá sé ríthábhachtach.
He attached the greatest importance to that, ba ríthábhachtach leis é sin.
It is of prime importance, tá sé ríthábhachtach.
Question of vital importance, ceist ríthábhachtach.
Vitally important, ríthábhachtach.