be down to somebody/something
be down to (one)
To be someone's duty, decision, or responsibility. After your father retires, it will be down to you to lead the company. So I guess it's down to me then.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be down to something
COMMON If something is down to something else, the second thing is the cause of the first. When you are asked to score goals, then a lot is down to confidence and Kevin has that. I think that the show's popularity is down to two things.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
be down to somebody/something
(informal)1 be caused by a particular person or thing: She claimed her problems were down to the media. ♢ Our defeat in last week’s game is down to the goalkeeper, who played very badly.
2 be the responsibility of somebody: It’s down to you to check the doors and windows before we leave.
be down to something
have nothing except one or a few items of the kind mentioned: I’m down to my last penny.Farlex Partner Idioms Dictionary © Farlex 2017