Grammar 101: What’s to Say, Who’s to Say
November 5th, 2009 by Michael Kwan
Whenever you start a sentence with “what’s to say” or “who’s to say,” you need to complete the sentence with a full clause and a question mark. This is because these sentences are used for expressing the uncertainty of an event or a posited truth. Here are a few examples.
What’s to say he wanted to go to the party in the first place?
Who’s to say that we’re to blame for global warming?
Who’s to say what I can and cannot do?
Just like when it comes to ending sentences in a preposition and maintaining a consistent parallel structure, using “what’s to say” or “who’s to say” to start a sentence is largely a matter of personal preference. Some people like this kind of writing style, whereas others feel that it is too casual for certain applications.
If you separate the respective contractions, you can see how these sentences are still grammatically acceptable. “Who’s to say” can be separated into “who is to say.” This poses a question and the appropriate response to such a question would involve answering the question of “who.” In the above example on global warming, you could refer to David Suzuki or Al Gore.
In most instances, you can replace “who’s to say” with “what’s to say” to get the same desired query. You are still questioning the certainty of a certain statement. This is quite different than the difference between much and many, since that is much more distinct.
Do you have a suggestion for a future Grammar 101? Let me know through the comment form below.
Tags: grammar, grammar tips, writing style
Filed under Freelance Writing.













I should memorize this.
Excellent Michael! This is a great example of everyday life expressions that can be used in our writing to bring more street conversation and feeling.
[...] context, then I’ll go with that word choice. This is similar to how I approach the usage of what’s to say, among other English [...]