I know it looks so naive but I don't really quite understand "subject to" + verb pattern. Such as :

These computers are subject to change.

What exactly does it mean?

6 Answers 6


Part of the problem may be that this usage pertains to the adjective subject rather than the verb.

One definition at dictionary.com for the adjective is:

19. open or exposed (usually followed by to ): subject to ridicule.

"These computers are subject to change" means the computers are open to change.

Another part of the problem with this usage may be the alternate definitions:

Some other definitions at dictionary.com for the adjective are:

20. being dependent or conditional upon something (usually followed by to ): His consent is subject to your approval.

21. being under the necessity of undergoing something (usually followed by to ): All beings are subject to death.

The range of definitions from "open to exposed" to "being dependent or conditional upon" to "being under the necessity of undergoing" almost seems designed to confuse.


There seems to be a bit of a misunderstanding: change is a noun here, not a verb.

As Krueger has explained, the adjective subject + to + noun x normally means "exposed to x / open to x / susceptible to x".

So your example these computers are subject to change could mean something like this:

These computers may be changed ("are open to change/changes").

But I must say I find the use of subject to change with computers a bit odd: when something is said to be subject to change, it is usually some statement or position or document, not really a physical object like a computer. But of course in an unusual context it is possible.

  • 1
    Like you, my first instinct was to think of the computers as physical objects, in which case you wouldn't ordinarily speak of them as "subject to change". But if they were hypothetical objects (in a proposal for automating some system, for example), it would be a perfectly normal usage. Sep 18, 2011 at 17:30
  • @FumbleFingers: Yes, certainly. It was just a bit unusual for an example sentence, so I thought I should make the OP aware of that. Sep 18, 2011 at 20:17
  • While I'm not suggesting that 'change' is a verb in 'subject to change', the fact that 'X is liable to change' does use a to-infinitive means that there needs to be some evidence given to support 'change is a noun here, not a verb'. Mar 26, 2016 at 0:30
  • @EdwinAshworth: There "needs to be evidence"? Then why don't you provide some? It's easy enough: it's subject to revise. Mar 26, 2016 at 2:33
  • That is the responsibility of the answerer. As Matt Gutting says, "What we're really looking for (on this or any other Stack Exchange site) is a supported answer; one that you can support with authoritative references (in this case a [grammar], dictionary, or some other such document). Edit your question and put in your support; then [your answer will be worthy of the upvotes]. // I can't find positive evidence that 'subject' may not be followed by a to-infinitive, in the way 'liable' and 'likely' may. Mar 26, 2016 at 9:42

It means that verb can happen to it. Change can happen to computers, or computers can be caused to undergo or endure change.

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    Not at all. By your definition, the particular computers might be altered by, for example, having more memory added at some time in the future. But almost always the meaning would be "You might get computers of the type specified, but we may decide on a different type before you actually get them". Sep 18, 2011 at 17:32

It bears mentioning that, while you can say subject to [verb], "subject to change" itself is a rather common phrase that just means "[noun] might change in the future."


The English phrase "X is/are subject to Y" has three different common meanings:

  1. Y is required for X to happen or regulates the manner in which X can happen. "The merger is subject to shareholder approval." "U.S. action in Libya is subject to the War Powers Act."

  2. Y is a process that often happens to X. "Battery contacts are subject to corrosion."

  3. Y is thing that may act on or become associated with X. "Specifications are subject to change." "Are tablets subject to malware?"


subject to means contingent or dependent on.

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