snappish

adjective2

1. •
   Likely to snap or bite.

   • She came to us snappish and suspicious, but when she found what sort of place ours was, it all went off by degrees; […] — 1877
2. •
   Exhibiting irritation or impatience; curt; irascible.

   • The past fortnight had been one of sullenness, cold black looks, short snappish words, and those ingenious contradictions which sometimes vary the halcyon calm of domestic felicity. — 1831