In Welsh, "fysw" is a form of the verb "bod," which means "to be." Specifically, it is the conditional form meaning "would be." It is used to express hypothetical situations or possibilities in the future.
'You' is not a Welsh word.
It doesn't mean anything in Welsh; it's in English.
'Carley' is not a Welsh word.
Do you mean 'What is the Welsh for witchcraft?' That is 'dewiniaeth'.
It's not a word in Welsh.
It's not a Welsh word.
This is not a Welsh word, but you might mean 'barod,' which means 'ready.'
'Sorry' isn't a Welsh word so it has no meaning in Welsh.
bont (or pont) is welsh for bridge
Perisgop is the Welsh word for a periscope.
It doesn't appear to be a Welsh word.
Do you mean Welsh Rarebit