"I have to say."
Translation:Rhaid i fi ddweud.
Because it's a pronoun though it is possible to say "Rhaid i fi ddweud". Remember in welsh we refer to them as mutations and specify which we are talking about by using an adjective i.e "soft mutation, nasal mutation and aspirate mutation". It's alright to use "Lenite" on here since the contributors and anyone who has done Irish will be familiar with the term, but most people in Wales would have no clue what you're on about.