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In several books that mention GUI, keyboard, or mouse buttons (e.g. the book Programming Windows by Charles Petzold), the authors refer to the state of a pressed button as depressed. Why is this term used instead of the word pressed, which has a simple and intuitive meaning?

Some alternative terms that could be a better fit are pushed, clicked, or activated. As someone who is not a native-English speaker, the term depressed is unintuitive to me because it resembles the opposite meaning: not pressed.

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migrated from programmers.stackexchange.com Apr 14 '11 at 18:29

This question came from our site for professional programmers interested in conceptual questions about software development.

Because buttons become very sad when you press them. – JSBձոգչ Apr 14 '11 at 19:18
@JSBᾶngs Actually, people feel 'pressed down' when they are said to be depressed. – Kris Feb 18 '12 at 11:19
Yeah, wouldn't you be depressed if people were constantly pounding on you? – Hot Licks May 23 '15 at 20:19
Wow. 5 answers already and nobody's mentioned metaphor. The emotional sense is part of the Up/Down complex. The physical pressing down is the basic sense; emotions are metaphorical. – John Lawler May 23 '15 at 20:29
up vote 15 down vote accepted

From TheFreeDictionary.com:

depression 1. a. The act of depressing. b. The condition of being depressed.

And the verb:

depress 4. to press or push down

So ... depressed works just fine for the state of a button being pushed in.

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So to elaborate for the OP, "Press" means to push, regardless of direction. "Depress" specifically means to push DOWN. – Kevin Apr 14 '11 at 20:04
It's interesting to me because "deselect" is the opposite of "select", so I've assumed that "depress" was used in the same way. Also, I'm terrified that this question was moved to this website. Spelling mistakes.. gulp – Andrej Mitrović Apr 14 '11 at 20:31
if you needed the "opposite of press" you could, in some cases, write de-press. (Think of some sort of metal-working factory.) BTW the spirit of your question - the fact that "de-" can mean more than one thing -- so what? English is a total mess! You can give literally thousands of examples of words that "should mean" something else, in a humorous way. – Joe Blow Jul 23 '14 at 8:12
@Kevin So what's the word for "push UP"? – endolith Nov 21 '14 at 19:10
@endolith Press-up - en.wikipedia.org/wiki/Push-up – Kevin Nov 21 '14 at 19:26

"De" is also used as a prefix meaning "down to the bottom" or "away", which can also lead to "completely", as in the examples here: denude, denigrate.

It may count as an auto-antonym, also called contronym. But I can't think of an example of un-pressing something.

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On a manual typewriter, pressing Caps Lock both physically pressed down the Shift button and kept it depressed. So if you wanted to take caps off, you had to un-press the Shift button (usually by pressing Caps Lock again, thus making the Shift button undepressed). Maybe that's why it's all electric these days. – TimLymington May 14 '11 at 23:17

Not sure, but my guess is that it's because technical writers are trying to make a distinction between the act of pressing something and the state of something being down/pressed/depressed.

depress and press are pretty much exact synonyms, but almost no one ever uses the term "depress" to describe the act of pressing something. It's correct, but the usage is rare. It's usually used to refer to the state of something. The word pressed is used both ways. But technical writers exploit the rarity of the usage of "depressed" to emphasize the distinction between between the state-word and the action-word.


He pressed the button, and it was pressed.

Was the button actually in a down-state after it was pressed, or is the sentence just saying the same thing twice, that he attempted to press it?

He pressed the button, and it was depressed.

Okay, got it, his attempt to press the button was successful, and it left the button in a down-state.

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Depressed can also mean the the button is in a lowered state, which is the result of pressing it.

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There are two types of mechanically activated switches in the electronic and electrical industry. Type A is where the switch remains stucked indefinitely at a lower position even after releasing your fingers from it and type B is a push( downwards of course)- to -on type where the switch bounces back( upwards of course) to its original position after the finger is released. So you depress or unpress the "switch" for type A and you press or release a type B "switch".Both actions have the same purpose ; to turn on or activate something. Also we actually seldom use the words press or depress for a switch from my job experience We flick ,push up/ down or flip a switch. In my job as a wireman we push or depress a push button.Wong could you please depress the green pushbutton when I count to three?. Ok do you want me to flip / flick / turn on the 60 amps MCB switch ?.For buttons( pushbuttons): press or push( usually to turn on only),depress( turn on only),unpress or release( to deactivate or turn off only) depending whether type A or B. For switches : turn on or off, flip up/ down, flick down/ up, push up/ down. Just turn that damn thing on already!.

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Welcome to ELU. This does not appear to answer the question, which is about the linguistic/semantic difference between the participles pressed and depressed. It's not about different types of switches. – Andrew Leach May 23 '15 at 19:04
This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. – Chenmunka May 26 '15 at 9:12

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