แว้ง(wáeng)

Meanings

1VerbB2

[to] turn back suddenly; [to] turn and bite

to turn the body back suddenly, especially in order to bite, snap at, or attack, as an animal may do

Examples

When I accidentally stepped on the cat's tail, it suddenly turned and scratched my leg.
2VerbB2

[to] turn on [sb]; betray [sb]

to suddenly turn against or betray someone, especially after they have helped or trusted you