1. To cause one to become unhinged, insane, or mentally unstable. Trying to deal with the complaints and requests of so many different people and departments is enough to drive a person mad! You kids are going to drive me mad one of these days with all your arguing.

2. To make one very angry, irritated, or vexed. OK, it was funny at first, but now your jokes are just driving me mad! I know it drove her mad to see the company she'd spent her life building be dismantled the incompetent new CEO.

1. To upset, irritate, or annoy someone to the point of distraction. It drives me mad seeing all these people just staring at their phones all day long. Would you stop shouting, you're driving me mad!

2. To cause someone to become unhinged, insane, or mentally unstable. All that pressure finally drove Steve mad in the end. You kids are going to drive me mad one of these days with all your arguing.