to do something secretly or deceitfully against someone
hacer algo en secreto o de manera engañosa contra alguien
"She went behind my back and told the manager everything."
"Ella fue detrás de mi espalda y le contó al gerente todo."
to give in or fail due to too much stress or pressure
something that seems promising at first but fails to deliver
to be very frightened
to study very hard
confused or not paying attention
to make a bad situation seem better by dealing with it calml...