bitch out

Short definition from Wiktionary

Verb

1. 1
   To not do something out of fear; chicken out.
2. 2
   To back out of an agreement for any reason.
3. 3
   To complain.
4. 4
   To yell at; to reprimand; to chew out.

Noun

1. 1
   A vocal argument or criticism, especially for insignificant reasons.