"Llanfairpwllgwyngyllgogerychwyrn-drobwllllantysiliogogogoch" (58 characters, representing 51 letters) is the longest place name in Wales. The actual name commonly used for the town is much shorter. (Llanfairpwllgwyngyllgogerychwyrn-drobwllllantysiliogogogoch does not really have a hyphen at that point, but the markup language of this page limits the length of words!)
The longest Welsh word is Llanfairpwllgwyngyllgogerychwyrndrobwll-llantysiliogogogoch. The word means, "The church of St. Mary in the hollow of white hazel trees near the rapid whirlpool by St. Tysilio's of the red cave".
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch
Pronounced: Clan-via-porth-gwyn-gith-go-ge-rick-quin-drob-ewch-clan-toe-sillyo-go-go-gockh
'You' is not a Welsh word.
The word 'fern' is not a Welsh word and has no meaning. The Welsh word for 'a fern' is 'rhedynen'.
It's not a word in Welsh.
'Carley' is not a Welsh word.
It's not a Welsh word.
"Gabrielle" is not a Welsh name. It is a French feminine form of the name Gabriel, which means "God is my strength."
In Welsh, "boyo" is an informal term or expression used to address someone, similar to "mate" or "buddy" in English. It is commonly used to show friendliness or familiarity.
It doesn't appear to be a Welsh word.
Perisgop is the Welsh word for a periscope.
"Celyn" means "holly" in Welsh.
"Heol" is the Welsh word for "road" or "street."
'Sorry' isn't a Welsh word so it has no meaning in Welsh.