expiration

/ˌɛk.spəˈɹeɪ.ʃən/

//ˌɛk.spəˈɹeɪ.ʃən// noun

By · According to Wiktionary data (CC BY-SA) ·

"expiration" is a 10-letter English headword indexed on PlainSpell.

The verdict

“expiration” is a moderately-common English word, ranked #15,401 in English word frequency and used as a noun.

#15,401
frequency rank, English
10
letters
15
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An act, process, or instance of expiring.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

expiration vs exploration
82% similar
expiration vs excitation
80% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for expiration
PropertyValue
Headwordexpiration
LanguageEnglish
Part of speechNoun
IPA/ˌɛk.spəˈɹeɪ.ʃən/
Letters10
Frequency rank#15,401
Misspellings tracked15
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “expiration” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). expiration lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for expiration is 10 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˌɛk.spəˈɹeɪ.ʃən/. Corpus data places it at rank #15,401 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 6 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 15 likely wrong-spelling variants for expiration, with forms such as "epxiration", "exipration", and "expiartion". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 2 confusable-pair relationships, "exploration", "excitation", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English expiracioun, exspiracioun (“vapor, breath”), from Latin expīrātiōnem, exspīrātiōnem, accusative singular of expīrātiō, exspīrātiō. By surface analysis, expire + -ation. The correct English form is expiration, spelled E-X-P-I-R-A-T-I-O-N.

Definition

  1. 1
    An act, process, or instance of expiring.
  2. 2
    An act, process, or instance of expiring.
  3. 3
    An act, process, or instance of expiring.
  4. 4
    An act, process, or instance of expiring.
  5. 5
    An act, process, or instance of expiring.
  6. 6
    An act, process, or instance of expiring.

Etymology

From Middle English expiracioun, exspiracioun (“vapor, breath”), from Latin expīrātiōnem, exspīrātiōnem, accusative singular of expīrātiō, exspīrātiō. By surface analysis, expire + -ation.

This word in other languages

expiración(Español)expiration(Français)

Common misspellings

Also misspelled as: epxiration,exipration,expiartion,expiraiton,expirasion,expiratino,expirationn,expiratoin,expirattion,expirration,expirtaion,exppiration,expriation,exxpiration,xepiration

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of expiration - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

epxiration2exipration2expiartion2expiraiton2expirasion1expiratino2expirationn1expiratoin2
Edit distance from "expiration"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "expiration"?
"expiration" is spelled E-X-P-I-R-A-T-I-O-N. The IPA pronunciation is /ˌɛk.spəˈɹeɪ.ʃən/.
What does "expiration" mean?
As a noun, "expiration" means: An act, process, or instance of expiring.
What words are commonly confused with "expiration"?
"expiration" is commonly confused with "exploration", "excitation". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "expiration"?
The IPA (International Phonetic Alphabet) transcription for "expiration" is /ˌɛk.spəˈɹeɪ.ʃən/. 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 "expiration"?
From Middle English expiracioun, exspiracioun (“vapor, breath”), from Latin expīrātiōnem, exspīrātiōnem, accusative singular of expīrātiō, exspīrātiō. By surface analysis, expire + -ation. 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.

Using “expiration”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is E-X-P-I-R-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌɛk.spəˈɹeɪ.ʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “exploration” - see the side-by-side comparison. expiration vs exploration
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list