1. [informal] Marked by rude or peremptory shortness
   "try to cultivate a less snippy manner";
   - brusque, brusk [non-standard], curt, short
    
2. Tending to speak in a critical, harsh or sarcastic way
   "His snippy remarks often offended his colleagues";
   - sharp-tongued

Derived forms: snippier, snippiest

See also: discourteous, ignorant