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.
It's not a word in Welsh.
Do you mean 'What is the Welsh for witchcraft?' That is 'dewiniaeth'.
It's not a Welsh word.
'Carley' is 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.
Perisgop is the Welsh word for a periscope.
bont (or pont) is welsh for bridge
Do you mean Welsh Rarebit
It doesn't appear to be a Welsh word.