do with

verb

1. could do with or can do with
   to find useful; benefit from

   she could do with a night's sleep

2. have to do with
   to be involved in or connected with

   his illness has a lot to do with his failing the exam

3. to do with
   concerning; related to
4. what…do with
   1. to put or place

      what did you do with my coat?

   2. to handle or treat

      what are we going to do with these hooligans?

   3. to fill one's time usefully

      she didn't know what to do with herself when term ended

Idioms and Phrases

Put up or manage with, as in I can do with very little sleep . [Early 1800s] Also see can do with ; have to do with .