informal promptly; quickly
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use sharpish in a sentence
A dark chap did once—through the ribs—it didn't feel so bad, a little sharpish at first; why didn't he aim a bit higher?
In five minutes they were all a-moving along in one mob at a pretty sharpish trot like a lot of store cattle.
We rode up sharpish, and showed our revolvers, singing out to him to 'bail up'.
My patience was exhausted, and I struck him a sharpish blow across the mouth, a hint that he took that he had better keep quiet.The Adventures of Captain Mago | Lon Cahun
There was something a little unsatisfactory in the countenance of this light-haired youth, with the sharpish upturned nose.Uncle Silas | J. S. LeFanu