have to do with

have to do with (something)

To be related to something. I overheard you girls on the phone and couldn't help but wonder what prom dresses have to do with the science project you were supposedly talking about. Ralph is on the line. He said it has to do with the new account.
See also: have
Farlex Dictionary of Idioms.

have something to do with something

 and not have anything to do with something
have nothing to do with something; to be associated with or related to something. Does your dislike for Sally have something to do with the way she insulted you? My illness has something to do with my lungs.
See also: have

have to do with something

to be associated with or related to something. Sally's unhappiness has to do with the way you insulted her. My illness has to do with my stomach.
See also: have
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have to do with

Be concerned or associated with; deal with. For example, This book has to do with the divisions within the church. [1100s] For the antonym, see have nothing to do with.
See also: have
The American Heritage® Dictionary of Idioms by Christine Ammer.

be/have to do with somebody/something

be connected or concerned with somebody/something: ‘What do you want to see me about?’ ‘It’s to do with the letter you sent.’ I’m not sure what he does for a living but I know it’s something to do with computers.
See also: have, somebody, something
Farlex Partner Idioms Dictionary

have to do with

To be concerned or associated with.
See also: have
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • have to do with (something)
  • be to do with (something)
  • be/have to do with somebody/something
  • get the nerve up (to do something)
  • get the guts up (to do something)
  • get enough nerve up
  • get enough nerve up (to do something)
  • get the pluck up (to do something)
  • get enough guts up (to do something)
  • get the spunk up