adjective British Informal.
Words nearby slap-up
Origin of slap-up
Examples from the Web for slap-up
Moses, ain't she a slap-up girl, and ain't they just spooney!The New Tenant|E. Phillips Oppenheim
I like that little chaffy chap, the Duke; what a slap-up story that was about the bal de l'Opra.
They would consult that father of hers, who knew Paris so well, and ask him to help them to arrange a regular "slap-up treat."Beyond The Rocks|Elinor Glyn
Then I would go to a slap-up restaurant, and have green peas, and a bottle of fizz, and a chump chop—O!The Works of Robert Louis Stevenson - Swanston Edition Vol. XIX (of 25)|Robert Louis Stevenson
Our concert party got really quite a slap-up show going about this time.Fanny Goes to War|Pat Beauchamp