歯向かう

Etymology
Compound of 🇰🇲, literally "to face (someone) with teeth"; can also be used, literally "carrying a blade to face (someone)"

Verb

 * 1)  to strike back at, to bite back, to resist, to defy, to disobey
 * 2)  showing teeth with an intent to bite
 * 1)  showing teeth with an intent to bite
 * 1)  showing teeth with an intent to bite