Welsh...the only language that is spoken differently than it is spelled
Thank goodness - Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch
You probably already know some of the rules, but a single “f” is actually a “v” in english, and a double f “ff” is actually the equivalent of s single “f” in english. Also the double “dd” is as “th” in english. And for some real fun, try pronouncing the Ll, there is no equivalent to it in english.
Actually, Welsh is far more phonetic than English ... it’s just that Welsh letters have a very different sound than letters in English, so it seems weird to us. The C always sounds like an English K (even when followed by E, I or Y), the F sounds like an English V (it is the Welsh FF that sounds like an English F), the Welsh TH (which is considered one letter) always sounds like the TH in “then” or “than” (the initial consonant sound in “the” and “this” and “that” is spelled with a DD (also considered one letter) in Welsh), the Welsh W can be used as a consonant that has two possible sounds, exactly like the English OO (sometimes as in “took” and sometimes as in “tooth”), etc. Fascinating language.