What's the noun for spiffing? Here's the word you're looking for.
spiff
(uncountable) Attractiveness or charm in dress, appearance, or manner
(countable, dated) A well-dressed man
(jargon) A bonus or other remuneration, given for reaching a sales goal or promoting the goods of a particular manufacturer. Originally from textile retailing, a percentage given for selling off surplus or out-of-fashion stock, of which the sales person could offer part as a discount to a customer.
(countable, colloquial, Jamaica) a hand-rolled marijuana cigarette; a joint