DEAL WITH › to behave towards or deal with someone in a particular way: He treats her really badly. She felt she'd been unfairly treated by her employer. They treat her like one of their own children.
CONSIDER › to consider something in a particular way: He treated my suggestion as a joke.
ILLNESS/INJURY › to give medical care to someone for an illness or injury: He's being treated for cancer at a hospital in Manchester.
SPECIAL › to do or buy something special for someone: I'm going to treat her to dinner at that nice Italian restaurant.
PROTECT › to put a substance on something in order to protect it: The wood is then treated with a special chemical to protect it from the rain.