(be in) a tearing hurry/rush British old-fashioned informal
To do something or go somewhere very quickly, usually because you are going to be late or you are already late
Peter drove to school in a tearing hurry because there was an exam that day.
I was unable to politely greet Jennie because I was in a tearing rush at that time.
Very quickly
Very fast.
The verb "be" should be conjugated according to its tense.
To do domething based on your emotions rather than for rational reasons
I can't believe that Tom beat his classmate. He's always the one who let his heart rule his head.