Prefix

/ˈpɹiːfɪks/ noun, verb

noun, verb ·Common ·High school level

Meaning at a glance

  • Primary sense: Something placed before another; A morpheme added to the beginning of a word to modify its meaning, for example as, pre- in prefix, con- in conjure, re- in reheat, etc.
  • Grammar: prefix is listed as noun, verb.
  • Nearest alternatives: accidence, add, adjoin, affix.
  • Useful contrasts: append at end, detach, ending.
  • Usage evidence: A curious German word is "entfernen" (to put some distance between), because the prefix "ent-" means to take something away, in this case the distance, but taking away the distance would mean to bring it closer which is the exact opposite of what the word "entfernen" means.

How to use "prefix"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "prefix" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "prefix" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "prefix" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "prefix" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "prefix" is acting as noun, verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "accidence" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "prefix", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    Something placed before another; A morpheme added to the beginning of a word to modify its meaning, for example as, pre- in prefix, con- in conjure, re- in reheat, etc.

    "The chosen prefixes won the vote in part because they start with the only two letters left in the alphabet that are not already used in measurement. The b for “bronto” is already used for bytes and h for “hella” is used for hecto, the prefix for 100."

  2. 2
    an affix that is added in front of the word wordnet
  3. 3
    Something placed before another; A set of digits placed before a telephone number, to indicate where the number is based, what type of phone number it is (landline, mobile, toll-free, premium rate etc.)

    "in the UK, a number with an 0800 prefix is a toll-free number."

  4. 4
    Something placed before another; A title added to a person's name, such as Mr. or Dr.
  5. 5
    Something placed before another; An initial segment of a string of characters.

    "The string "abra" is both a prefix and a suffix of the string "abracadabra"."

Verb
  1. 1
    To determine beforehand; to set in advance. transitive

    "But the danger was, that a man can hardly prefix any certaine limits unto his desire[…]."

  2. 2
    attach a prefix to wordnet
  3. 3
    To put or fix before, or at the beginning of something; to place at the start. transitive

Synonyms

All synonyms
accidenceaddadjoinaffixaffixaffix instruction target

Antonyms

append at enddetachendingendings

Example

"A curious German word is "entfernen" (to put some distance between), because the prefix "ent-" means to take something away, in this case the distance, but taking away the distance would mean to bring it closer which is the exact opposite of what the word "entfernen" means."

Common questions

What does "prefix" mean?

Something placed before another; A morpheme added to the beginning of a word to modify its meaning, for example as, pre- in prefix, con- in conjure, re- in reheat, etc.

What is a synonym for "prefix"?

Common synonyms include: accidence, add, adjoin, affix, affix, affix instruction target.

How do you use "prefix" in a sentence?

A curious German word is "entfernen" (to put some distance between), because the prefix "ent-" means to take something away, in this case the distance, but taking away the distance would mean to bring it closer which is the exact opposite of what the word "entfernen" means.

How do you pronounce "prefix"?

Pronounced /ˈpɹiːfɪks/.

Etymology

Etymology 1

Borrowed from Late Latin praefīxum, from Latin praefīxus, past participle of praefīgō (“I (fix, fasten, set up) in front”, “I fix on the (end, extremity)”) (from prae- (“before”) + fīgō (“I fix”, “I fasten”, “I affix”)), equivalent to pre- + -fix. Doublet of the archaic synonym prefixum.

Etymology 2

From Middle English prefixen, from Middle French prefixer, from Latin praefīxus, past participle of praefīgō (“I (fix, fasten, set up) in front”, “I fix on the (end, extremity)”) (from prae- (“before”) + fīgō (“I fix”, “I fasten”, “I affix”)), equivalent to pre- + -fix.

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