spiff

IPA: spˈɪf

(uncountable) Attractiveness or charm in dress, appearance, or manner.
(countable, archaic, slang) A well-dressed man; a swell.
(countable, commerce, slang) 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) Alternative form of spliff (“hand-rolled marijuana cigarette”) [(slang, Jamaica, UK, Australia) A cannabis cigarette.]

(transitive, informal) (usually with up or out) To make spiffy (attractive, polished, or up-to-date)
(transitive, commerce, slang) To reward (a salesperson) with a spiff or bonus.
(transitive, commerce, slang) To attach a spiff or bonus to the selling of (a product)

Examples of "spiff" in Sentences

He always looks so spiff in his tailored suits and polished shoes
The group decided to spiff up their presentation with colorful graphics and dynamic slides
She gave her old car a good cleaning and waxing to make it look spiff for the upcoming road trip
The restaurant was renovated and now looks quite spiff with modern decor and stylish furniture
The students were instructed to spiff up their resumes with relevant experience and skills to impress potential employers