Bhí fuaim na tóirnighe ag borradh d'réir mar a bhí sí ag druidimt linn. - The sound of the thunder was "swelling" as it drew near. ag borradh agus ag trághadh. - Swelling and getting less.
Ag borradh le mór-chúis = swelled up with pride. Ó dh'eirigheadhar sa saoghal thá sí ag borradh le morcúis. - Since they got up in the world she is puffed up with pride.