Finalise (verb)
standard spelling of from=non-Oxford British spelling|finalize
Finalize (verb)
To make final or firm; to finish or complete.
“As soon as we get the plane tickets, we’ll finalize our reservations with the hotel.”
Finalize (verb)
To prepare (an object) for garbage collection by calling its finalizer.
Wiktionary
Finalize (verb)
complete or agree on a finished and definitive version of
“efforts intensified to finalize plans for post-war reconstruction”
Oxford Dictionary