Snap·pish a.
  1. Apt to snap at persons or things; eager to bite; as, a snapping cur.
  2. Sharp in reply; apt to speak angrily or testily; easily provoked; tart; peevish.
     The taunting address of a snappish misanthrope.   --Jeffrey.
  -- Snap*pish*ly, adv. -- Snap*pish*ness, n.
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  snappishly
       adv : in an ill-natured and snappish manner; "`Don't talk to me
             now,' she said snappishly"