The term "bitching" has several meanings, but it is most commonly used to refer to complaining or whining. It can also be used in a more general sense to describe any kind of negative behavior or attitude.
Usage examples
The neighbors were constantly bitching about the noise coming from our house parties.
Sarah was always bitching about her job, complaining about her coworkers and the long hours.
Tom's boss caught him bitching about the company's policies with his colleagues.
The restaurant received several negative reviews from customers bitching about the slow service.
During the meeting, Dave couldn't stop bitching about his teammates, blaming them for the project's failure.
The students were bitching about the difficult exam, claiming that it was unfair and too challenging.
Samantha's friends encouraged her to stop bitching about her weight and start taking concrete steps towards a healthier lifestyle.
John's ex-girlfriend couldn't stop bitching about him on social media, spreading rumors and airing their dirty laundry.
The players were caught on camera bitching about their coach's decisions during the game, which led to tension in the team.
The employees gathered during lunch break, bitching about their demanding boss and unrealistic deadlines.