1. in an ill-natured and snappish manner; - Example: "`Don't talk to me now,' she said snappishly"
The Collaborative International Dictionary of English v.0.48:
Snappish \Snap"pish\, a.
1. Apt to snap at persons or things; eager to bite; as, a
2. Sharp in reply; apt to speak angrily or testily; easily
provoked; tart; peevish.
The taunting address of a snappish misanthrope.
[1913 Webster] -- Snap"pish*ly, adv. --
WordNet (r) 3.0 (2006):
adv 1: in an ill-natured and snappish manner; "`Don't talk to me
now,' she said snappishly"