Her depression has something to do with her marital problems.

Global warming has something to do with deforestation.

In these examples and a lot of other examples, what comes after "have something to do with" is somehow the cause of/a contributory factor in what comes before it. My question is if "to have something to do with" might mean the other war around, that is, what comes before it being the cause of/a contributory factor in what comes after it.

Online dictionaries that I checked are ambiguous on this. Some of them like Macmillan say the meaning of the expression is a connection, but then the examples they give has the meaning of causality in the first sense mentioned above. Others like Cambridge actually mention causality but again in the first sense mentioned above.

My question is about the direction of the causal connection/contribution, as far as such a connection is part of the meaning.

  • 5
    You know it's a vague but useful term. If there's causality, it's loose. That is the purpose of saying 'something' rather than 'a direct relation to.' A bad marriage.will cause stress, which may well produce depression, but that is as far as the statements wants to go. Jun 22, 2017 at 15:26
  • 4
    Don't use "something to do with" when you want to be precise. State the actual relationship. And it isn't useful to assume that that the phrase is meant to mean the same relationship every time it is used, even by the same author. Sometimes one needs to be vague, perhaps because there isn't enough information to be precise.
    – jejorda2
    Jun 22, 2017 at 15:34
  • 1
    @Sasan I am deleting my comment as you've made me question my assumptions too. Due to my 'mistake' I wonder if we have started to shift the directional usage of the phrase.
    – Tom22
    Jun 22, 2017 at 15:51
  • 1
    Obligatory xkcd: Correlation
    – 1006a
    Jun 22, 2017 at 17:28
  • 2
    @EdwinAshworth - Sorry, your comment repeats the word depression: 'Her depression is a contributory factor in her depression.' Jun 22, 2017 at 20:07

5 Answers 5


There is no strict direction of the causal connection. It can be forward (in the order stated) or it can be backwards. Sometimes times they can be bidirectional. Substitute "plays a role in" for has something to do with and the direction becomes a bit more clear.

Her depression has something to do with her marital problems. Her depression plays a role in her marital problems.

This is not implying her marital problems are caused by her depression, but rather that her depression is playing a role in her marital problems. But a case can be made for the opposite reading, because it's inherently a bit ambiguous.

Maybe [our obsession with social media] has something to do with the things we thirst for — things like approval, attention, affection, recognition; all the interdependent needs. - NYT

This is clearly the opposite. Our obsession with social media doesn't play a role in our desire for affirmation, but rather the other way around.

The soprano Renée Fleming loves Paris, London and Vienna (not surprisingly, music has something to do with it). - NYT

Music plays a role in Flemimg's love of Paris, etc. - a forward causal direction.

So, unfortunately, the direction of the causal relationship must be determined by context.

  • More references would be helpful.
    – Sasan
    Jul 28, 2017 at 5:54
  • Regarding the last sentence: why is it unfortunate that the phrase itself does not indicate the direction of the causation? There are enough resources in the language to specify the direction, when greater precision is called for; in view of their availability, it is arguably fortunate that the language is rich enough to also give us an expression that leaves that open.
    – jsw29
    Nov 4, 2018 at 3:24

CED has:

be/have something to do with something [informal] ​

C1 to be related to something or a cause of something

(bolding mine) One of the examples they add

It [eg the unexpected tendency to shatter in the oven] might have something to do with the way it's made.

obviously licenses the or be a result of something sense you ask about. 'Be related to something' is very imprecise.

  • The question is about the direction of the relation, whatever that relation might be.
    – Sasan
    Jul 28, 2017 at 5:53
  • @Sasan 'A is a result of B' and 'A is a cause of B' obviously speak about the direction of the relation. In mathsspeak, this is (if the causes are sufficient) diagrammed A←B and A→B respectively. Jul 28, 2017 at 14:19

Note, most dictionaries and phrase books list “have to do with something”, not your specific phrase “have something to do with something.“ Your version is a lot more restrictive, and I’ll limit my answer purely to your specific phrase.

Although I found plenty of definitions for “have to do with something”, the only other place I found your phrase apart from Cambridge and Macmillan dictionaries is McGraw-Hill Dictionary of American Idioms and Phrasal Verbs, which defines it as simply:

to be associated with or related to something.

This expression is mostly used to imply causation, but not always, as I'll show later in my answer.

Exactly whether the cause or effect usually comes first, ie, "The [cause] has something to do with [the effect]" is not entirely clear. A Google search comparison of:

has something to do with the problem


problem has something to do with

... doesn't really help, as the "problem" in the second example can refer to the cause or effect."

When causality is implied, the direction of causality is not always obvious, but it can be, as you'll see in examples further below.

First let's take cases where I think the direction of causality is unclear. The first one is your example sentence.

Cases where the cause and effect are unclear and ambiguous:

Example 1:

Her depression has something to do with her marital problems.

I can't tell with much certainty if her marital problems created the depression or vice versa. I find this ambiguous.

Example 2:

The higher arrest rates have something to do with greater numbers of police

Did the city employ more police because arrest rates were going up? Or are more people being arrested because there are more police. This isn't clear to me.

However in other cases you can see how the direction of causality is very obvious.

Cases where the cause and effect are clear and unambiguous:

The car not starting has something to do with the fuel pump.

Can you imagine a dysfunctional fuel pump being a cause for why the car won't start?
I say yes.

Can you imagine a car not starting being a cause for a dysfunctional fuel pump?
I have to admit this question doesn't make much sense to me. But I'd be inclined to say no. So I claim that the above example is unambiguous.

Here's another example:

Her anxiety problem has something to do with last year's earthquake.

Can last year's earthquake cause an anxiety problem? I believe so. Can an anxiety problem cause last year's earthquake? I say no. I find this sentence unambiguous.

Notice the difference between examples I find ambiguous and clear. In the ambiguous examples, both terms, the first and the second, can be a cause for the other. That's why at least your first example is ambiguous; marital problems can cause depression, and depression can cause marital problems. In your second example, it's less ambiguous, because generally deforestation is seen to cause global warming, but I don't believe it's as obvious to a general reader that global warming causes deforestation.

Also notice, by swapping the first term and the second term you don't really get a change in meaning:

The car not starting has something to do with the fuel pump.
The fuel pump has something do to with the car not starting.
The higher arrest rates have something to do with greater numbers of police.
Greater numbers of police have something to do with the higher arrest rates.

You can see that the phrase doesn't create a difference when the two terms are swapped, in the same way that "A relates to B" is the same as "B relates to A". Try swapping the first and second terms in your examples and see if they mean anything different. I don't believe they do, because the phrase strictly means "related to" or "associated with".


* Cases where the phrase does not imply causality of any sort:*

The letter I got has/had something to do with my insurance.
The film has something to do with giant killer snakes.
Economic protectionism has something to do with levying tariffs on imports.

In the above examples it has the meaning of "relates to" or "associates with".

If you allow for some leeway, I could have given examples of:

That has nothing to do with this.
That evidence has very little to do with this case
The charges have to do with violent crimes

However I’ve strictly adhered to your particular phrase, that is, the first [something] is the word “something” itself: “to have something to do with bowling”.


1) You can’t know what the phrase means simply by looking at which term comes first and which comes second. In fact if you swap the two terms around I'm pretty sure you get the same meaning.
2) Your phrase very commonly states a cause and effect, but not always.
3) If it implies causation you can know what the cause and effect terms are only if just one of the two terms can be a cause for the other term, and not vice versa also. In these cases it’s not ambiguous. This is just is an observation of mine.

What does your phrase mean? Strictly speaking it means "relating to" or "associated with", however it's mostly used to explain or speculate about a reason for something. The other variants, which I mentioned, are more often just used to mark an association.

Two extra examples:
I've flipped the sentences around so you can see if the order of the cause and effect have a difference to the meaning.


His anger issues have something to do with his wife's incessant nagging.
His wife's incessant nagging has something to do with his anger issues.


Hereditary factors have something do to with developing schizophrenia.
Developing schizophrenia has something to do with hereditary factors.


In common parlance, "something to do with" can sound like a statement of causality.

Imagining a scenario where your question might be particularly important:

If you fear a speaker is parsing words, know that you would certainly not be able to hold her/him to a specific interpretation. If causality is important, it would be smart to ask for clarification.


The meaning of have something to do with is pretty much just correlate with.
If someone says

  • A has something to do with B

then they are claiming to have noticed some sort of correlation between A and B.
No evidence or theory is implied or expressed; this is an opinion, a hypothesis.
A might be causing B , or vice versa, or they may both be caused by something else. Or maybe not.
If you've ever heard the adage Correlation does not imply causation, then you understand how loose
the relationship can be between one thing and another thing that "has something to do with it."

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