Definition of what's eating you (or him or her)? in English:

what's eating you (or him or her)?

phrase

informal
  • What is worrying or annoying you (or him or her)?

    ‘OK, Mr Linley, what's eating you?’
    • ‘Seriously girl, what's eating you?’
    • ‘So the Almighty asked Adam: ‘So, what's eating you?’’
    • ‘‘What's eating him?’ Faye asked.’