snarl
noun
a vicious angry growl
an angry vicious expression
something jumbled or confused
“a tangle of government regulations”
verb
utter in an angry, sharp, or abrupt tone
“The sales clerk snapped a reply at the angry customer”
“The guard snarled at us”
Synonymssnapmake a snarling noise or move with a snarling noise
“Bullets snarled past us”
twist together or entwine into a confusing mass
“The child entangled the cord”
Oppositesunsnarlmake more complicated or confused through entanglements
Source: WordNet 3.1, Princeton University