"Cymaint" means "as big, as much, as many; so big, etc.)
I have missed you so much = dwi di dy fethu di gymaint
'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.