postfix

/ˈpəʊst.fɪks/

//ˈpəʊst.fɪks// verb

"postfix" is a 7-letter English headword indexed on PlainSpell.

The verdict

“postfix” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To suffix.

Corpus desk

Index EN-postfix · postfix · English

postfix · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "P" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for postfix
PropertyValue
Headwordpostfix
LanguageEnglish
Part of speechVerb
IPA/ˈpəʊst.fɪks/
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “postfix” in English

postfixsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

postfix is uncommon English outside the top frequency list, classed as averb, transcribed /ˈpəʊst.fɪks/. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for postfix, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From post- + fix. The correct English form is postfix, spelled P-O-S-T-F-I-X.

Definition

  1. 1
    To suffix.
  2. 2
    To subject a sample to postfixation

Recorded use

Wiktionary example

These source excerpts show how postfix appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Verbs with י for the first radical, often drop it in the future, imperative, and infinitive of Kal, to which last they postfix ת (לקח to take, follows this form), and in Niph. and Hiph. they change י into ו.

Etymology

From post- + fix.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "postfix"?
"postfix" is spelled P-O-S-T-F-I-X. The IPA pronunciation is /ˈpəʊst.fɪks/.
What does "postfix" mean?
As a verb, "postfix" means: To suffix.
How do you pronounce "postfix"?
The IPA (International Phonetic Alphabet) transcription for "postfix" is /ˈpəʊst.fɪks/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "postfix"?
From post- + fix. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list