* s fior thoil leamsa: This part is in Irish and translates to "I truly like/enjoy".
* cananan an toil leatsa: This part is a mix of Irish and English. "Cananan" is Irish for "language" and "an toil leatsa" is a phrase in Irish which means "what you like".
Putting it all together:
The phrase likely means: "I truly enjoy the language that you like."
However, there's a possibility that it was intended to be a different phrase with some typos or misunderstandings. It's hard to be certain without more context.
Possible alternative interpretations:
* "I truly enjoy the language that you enjoy" - if the "an" was meant to be "a"
* "I truly enjoy your language" - if "cananan an toil leatsa" was meant to be a singular phrase referring to a specific language liked by the person being addressed.
It would be helpful to know the context of the phrase to give a more accurate interpretation.