declassification

/diːˌklæsɪfɪˈkeɪʃən/

//diːˌklæsɪfɪˈkeɪʃən// noun

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

"declassification" is a 16-letter English headword indexed on PlainSpell.

The verdict

“declassification” is uncommon English (frequency #68,142 among 26,416 “D” headwords), classed as a noun. The kind of spelling people second-guess.

#68,142
frequency rank, English
26,416
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The process of declassifying.

Key facts for declassification
PropertyValue
Headworddeclassification
LanguageEnglish
Part of speechNoun
IPA/diːˌklæsɪfɪˈkeɪʃən/
Letters16
Frequency rank#68,142
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “declassification” 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). declassification lands here:

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

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

Rare enough to double-check

declassification is uncommon English at frequency #68,142 among 26,416 “D” headwords, classed as anoun, transcribed /diːˌklæsɪfɪˈkeɪʃən/. Rarity is why readers land here mid-draft. Gloss: "The process of declassifying.".

Zero misspellings are on record for declassification in our index, a straightforward case of a spelling with little room for common typos. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From de- + classification. The correct English form is declassification, spelled D-E-C-L-A-S-S-I-F-I-C-A-T-I-O-N.

Definition

  1. 1
    The process of declassifying.

Etymology

From de- + classification.

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 "declassification"?
"declassification" is spelled D-E-C-L-A-S-S-I-F-I-C-A-T-I-O-N. The IPA pronunciation is /diːˌklæsɪfɪˈkeɪʃən/.
What does "declassification" mean?
As a noun, "declassification" means: The process of declassifying.
How do you pronounce "declassification"?
The IPA (International Phonetic Alphabet) transcription for "declassification" is /diːˌklæsɪfɪˈkeɪʃən/. 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 "declassification"?
From de- + classification. 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 “declassification”

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

  • The one correct English spelling is D-E-C-L-A-S-S-I-F-I-C-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /diːˌklæsɪfɪˈkeɪʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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