What is the opposite word to "indent"—"outdent" or "unindent"?

I'm looking for the opposite word to "indent." Is it "outdent", or is it "unindent"?

Corresponding to "Tab" and "Shift Tab" in most editors.

Corresponding to "Tab" and "Shift Tab" in most editors.

In that case you'll want unindent, as it reverses the indent action, and as outdent refers to a (usually left-) hanging block of text.

Dedent or corrupted Outdent is correct. http://en.wiktionary.org/wiki/dedent

(Disclaimer: The following is "from what I know")

Latin in- (alt. im-) is a prefix, not to be confused with the english word in (which is just shorthand for inside/inward/within). But we do commonly confuse the two, which is why Outdent is a valid word.

The prefix in-, when used with verbs, signifies "what is being done unto" rather than "what we do". (i.e. the object's perspective, figuratively "from itself/within", which is probably why people confuse the two words).

When used with a noun or adjective, in- is typically a negator or declaration of absence (unless it's a verbal noun/adjective, in which case the verb dictates the meaning). This is similar to how the - sign in math is used to describe a negative number (i.e. inactive/inaction "not active/acting" or implosive/imposing "negatively explosive/exposing", which showcases another reason why we mistake in for in-, because an implosion is effectively an "inwards explosion").

Here it becomes even more confusing, because we often use latin verbs as nouns and adjectives (because the english syntax, and thus vocabulary, is different from the latin one). So while the noun for the verb import should, for instance, be importation or importment, we just say "an import" or "something imported" instead. Neither importation or importment are correct english words, afaik.

I.e. indent means "to have toothed into", whereas noun dent means "tooth" and verb edent means "to tooth into". However, edent is not a valid english word because indent or dent is used instead. Because, you know, reasons... "To tooth" is a figurative way of saying to strike, blow, or sink into.

In other words, indent isn't even a noun, but a verb that we sometimes use as a noun. The correct noun of indent, in english, is indentation or indentment. There's no such thing as "an indent".

Another way to explain the logic is that you cannot technically dent something "the other way" because a dent is still a dent, and it's either there or it's not. Running is similar - you can change your direction, but you'll still be running.

Other words: Invent/event, invoke/evoke, Inject/eject, Involve/evolve http://en.wikipedia.org/wiki/List_of_Latin_words_with_English_derivatives

The opposite of indent is outdent, according to Christopher Hoot, graduate of Yale University and graphic design instructor at the University of Akron.

Outdent is modelled on indent, replacing in with its opposite, out.

It refers to multident -> multiple “dents” in a paragraph.

Example usage:

You may choose to indent or outdent this paragraph or line of type.

Verb outdent is to indent negatively, bring towards the margin.

By default, the summary tasks are bold and outdented, and the subtasks are indented beneath them.

You can also use de-indent.

Source:

• Wiktionary

Ex and out have the same meaning, so exdent has exactly the same meaning as outdent (an outward space) and it was used commonly in my typography work. Un means to reverse something, undo the indent, or effectively zero it out--no indent at all, either in or out. So exdent or outdent are the words you seek, with outdent more commonly used and understood.