snarl 1 
(snärl)
(snärl)v. snarled, snarl·ing, snarls
v.intr.
1. To growl viciously while baring the teeth.
2. To speak angrily or threateningly.
v.tr.
To utter with anger or hostility: snarled a retort.
n.
1. A vicious growl.
2. A vicious, hostile utterance.
[Frequentative of obsolete snar, perhaps from Dutch or Low German snarren, to rattle, probably of imitative origin.]
snarler n.
snarling·ly adv.
snarly adj.