Celtic is about as bad as French.
What's the point in putting letters in a word if you're not suppose to pronouce them? Cruithne is pronounced croo-een-ya. About a year ago I did a term paper on the mythic Celtic hero Cu Chulainn pronounced Koo Kullen. None of their words are spoken like they're spelled.
But then again, I guess English has the same problem, (tough, phone, dough, etc.)