declassify

/diːˈklæsɪfaɪ/

//diːˈklæsɪfaɪ// verb

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

The verdict

“declassify” is uncommon English (frequency #72,225 among 3,470 “D” headwords), classed as a verb. The kind of spelling people second-guess.

#72,225
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - to remove the classification from; to lift the restrictions on

Corpus desk

Index EN-declassify · declassify · English

declassify · rank #72,225 · 0 variants · 0 confusables

  • FREQ-RARE #72,225
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH declutter

Nearest frequency peer: declutter (+1 rank slots)

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.

Long-tail ranks near “declassify”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “declassify” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for declassify
PropertyValue
Headworddeclassify
LanguageEnglish
Part of speechVerb
IPA/diːˈklæsɪfaɪ/
Letters10
Frequency rank#72,225
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “declassify” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).declassifyfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “declutter” (#72,226), “deanery” (#72,222), “delegitimize” (#72,228). Among 3,470 “D” headwords, “declassify” is #72,225. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

declassify is uncommon English at frequency #72,225 among 3,470 “D” headwords, classed as averb, transcribed /diːˈklæsɪfaɪ/. Rarity is why readers land here mid-draft. Gloss: "to remove the classification from; to lift the restrictions on".

No generated misspelling entries exist for declassify in our index, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From de- + classify. The correct English form is declassify, spelled D-E-C-L-A-S-S-I-F-Y.

Definition

  1. 1
    to remove the classification from; to lift the restrictions on

Recorded use

Wiktionary examples

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

  1. Trump: This was done by the military and given to me. Uh, I think we can probably, right? / Staffer: I don't know, well, we'll have to see. Yeah, we'll have to try to- / Trump: Declassify it. / Staffer: -figure out a- yeah. / Trump: See as president I could have declassified it. Now I can't, you know, but this is still a secret. / Staffer: Yeah. [Laughter…
  2. There are also two First Class compartments, but these have been declassified for suburban services and will be available to all customers.

Etymology

From de- + classify.

This word in other languages

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 "declassify"?
"declassify" is spelled D-E-C-L-A-S-S-I-F-Y. The IPA pronunciation is /diːˈklæsɪfaɪ/.
What does "declassify" mean?
As a verb, "declassify" means: to remove the classification from; to lift the restrictions on
How do you pronounce "declassify"?
The IPA (International Phonetic Alphabet) transcription for "declassify" is /diːˈklæsɪfaɪ/. 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 "declassify"?
From de- + classify. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "declassify", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list