the power or right to give orders or make decisions
Only department managers have the authority [=right, power] to change the schedule. Does he have the authority to do this? = (US) Does he have authority to do this?
She spends a good chunk of her day on the phone. He devoted a large chunk of time to the project. (US) He spent a big/hefty chunk of change [=a lot of money] on that car.
mental state characterized by a despondent lack of activity
"But it also includes something called the General Health Questionnaire, which is used by clinicians and doctors to diagnose depression and anxiety disorders."