This is the 22nd most frequent Catalan word.
fins
"Fins" means "until" or "up to" in English.
In this sentence, 'fins' is used to mean 'until,' expressing a time frame in the expression 'See you soon.'
Fins aviat!
See you soon!
'Fins' here indicates a limit or end point, signaling the destination 'to the end of the street' in the context of direction.
Va caminar fins al final del carrer.
He walked until the end of the street.
In this usage, 'fins i tot' is an expression that means 'even,' emphasizing the inclusiveness of Sundays in her working days.