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Adjective: snippy (snippier,snippiest)  sni-pee
  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
    - sharp-tongued

Derived forms: snippier, snippiest

See also: discourteous, ignorant