I thought "suimiúil" = interesting, and "spéisiúil" = special?
Nope. It's a false cognate. spéisiúil = interesting as well.
Go raibh maith agat :)
Have you an interesting or have you "got" an.... Both should work
Wait, why does it turn down "special"? I thought that was another possible translation...
Speisialta is special. Spéisiúil comes from a different root spéis meaning fondness or interest. What out for the fadas (accents); they make a difference!