snappy in WordNet English dictionary

1. quick and energetic
   "a brisk walk in the park"; "a lively gait"; "a merry chase"; "traveling at a rattling rate"; "a snappy pace"; "a spanking breeze"
   alert  brisk  lively  merry  rattling  snappy  spanking  zippy 
   
2. pleasantly cold and invigorating
   "crisp clear nights and frosty mornings"; "a nipping wind"; "a nippy fall day"; "snappy weather"
   crisp  frosty  nipping  nippy  snappy 
   
3. marked by up-to-dateness in dress and manners
   "a dapper young man"; "a jaunty red hat"
   dapper  dashing  jaunty  natty  raffish  rakish  spiffy  snappy  spruce 
   
4. apt to speak irritably
   "a snappish tone of voice"
   snappish  snappy 
   
5. smart and fashionable
   "snappy conversation"; "some sharp and whipping lines"
   snappy  whipping