1. To clean or tidy something. Help me put the house in order before mom and dad get back! I have to put my classroom in order before the students return to school next week.

2. To put something into the proper sequence. This order is sometimes specified with a modifier. I've spent all morning putting all these books in order, so don't go messing them up! Students, please line up in alphabetical order.

3. To arrange or resolve something so that it is in the most proper, efficient state possible. They brought in a consultant to help put the project in order. I'm trying to put my affairs in order before the illness gets too debilitating.