Adjective
(slang) Adequate; of acceptable quality; satisfying an appropriate standard.
(chiefly Britain, dated, slang) Mentally alert, shrewd, savvy.
Source: en.wiktionary.orgRacism tears down your insides so that no matter what you achieve, you're not quite up to snuff. Alvin Ailey
The No Child Left Behind Program was an incentive to the schools to get their kids up to snuff on math and science and reading. Sandra Day O'Connor
And so I felt that it was a confirmation that what I gave to the editors and the directors was up to snuff." Source: Internet
Mel has potential but is not up to snuff quite yet. Source: Internet
We do notice moments when the fight choreography isn't quite up to snuff, or perhaps the stunt coordinators started scraping the bottom of the barrel for another idea. Source: Internet
As you’ve probably noticed, the words “saleing” and “sale-ing” above were enclosed in quotes, indicating that the writers didn’t consider the usage quite up to snuff. Source: Internet