DefCon

/ˈdɛfkɒn/

//ˈdɛfkɒn// name

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

"defcon" is a 6-letter English headword indexed on PlainSpell.

The verdict

“DefCon” is uncommon English (frequency #54,113 among 3,470 “D” headwords), classed as a proper noun. The kind of spelling people second-guess.

#54,113
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Alternative form of DEFCON.

Corpus desk

Index EN-defcon · DefCon · English

DefCon · rank #54,113 · 0 variants · 0 confusables

  • FREQ-RARE #54,113
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH decoupling

Nearest frequency peer: decoupling (-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 “DefCon”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for DefCon
PropertyValue
HeadwordDefCon
LanguageEnglish
Part of speechProper noun
IPA/ˈdɛfkɒn/
Letters6
Frequency rank#54,113
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “DefCon” 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).DefConfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “decoupling” (#54,112), “delicatessen” (#54,115), “delude” (#54,116). Among 3,470 “D” headwords, “DefCon” is #54,113. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

DefCon is uncommon English at frequency #54,113 among 3,470 “D” headwords, classed as aproper noun, transcribed /ˈdɛfkɒn/. Rarity is why readers land here mid-draft. Gloss: "Alternative form of DEFCON.".

We couldn't generate a plausible misspelling set for DefCon, since its letter sequence doesn't invite the usual edit-distance slips. Our confusable-pair dataset has no match for it, since no other headword is close enough in sound or shape to pair with it.

No explicit etymology string is stored for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is DefCon, spelled D-E-F-C-O-N.

Definition

  1. 1
    Alternative form of DEFCON.

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 "DefCon"?
"DefCon" is spelled D-E-F-C-O-N. The IPA pronunciation is /ˈdɛfkɒn/.
What does "DefCon" mean?
As a proper noun, "DefCon" means: Alternative form of DEFCON.
How do you pronounce "DefCon"?
The IPA (International Phonetic Alphabet) transcription for "DefCon" is /ˈdɛfkɒn/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "DefCon" come from?
"DefCon" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 "DefCon", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

delude#54,116dicked#54,120croton#54,102Crabbe#54,095

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

Source: FrequencyWords open word-frequency list