unsub
/ˈʌnsʌb/
"unsub" is a 5-letter English headword indexed on PlainSpell.
The verdict
“unsub” is uncommon English (frequency #56,511 among 1,433 “U” headwords), classed as a noun. The kind of spelling people second-guess.
- #56,511
- frequency rank, English
- 1,433
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of unknown subject of an investigation..
Corpus desk
Index EN-unsub · unsub · English
unsub · rank #56,511 · 0 variants · 0 confusables
- FREQ-RARE #56,511
- LEN-MID 5 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH unscrew
Nearest frequency peer: unscrew (-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 “unsub”
Sparse band: bars invert rank so rarer forms read shorter
- universalism
universalism
43,493 corpus weight
- unlearn
unlearn
43,492 corpus weight
- unscrew
unscrew
43,491 corpus weight
- unsub
unsub
43,490 corpus weight
- valance
valance
43,489 corpus weight
- ventriloqui…
ventriloquist
43,487 corpus weight
What this shows Long-tail view: where “unsub” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | unsub |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈʌnsʌb/ |
| Letters | 5 |
| Frequency rank | #56,511 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “unsub” in English
Rare enough to double-check
unsub is uncommon English at frequency #56,511 among 1,433 “U” headwords, classed as anoun, transcribed /ˈʌnsʌb/. Rarity is why readers land here mid-draft. Gloss: "Abbreviation of unknown subject of an investigation..".
The misspelling generator found no plausible variants for unsub, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
This entry's etymology isn't recorded, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is unsub, spelled U-N-S-U-B.
Definition
- 1Abbreviation of unknown subject of an investigation..
Recorded use
Wiktionary examplesThese source excerpts show how unsub appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Further analysis may identify that the unsub has no specific schedule and has been escalating in the type of fire activity he or she is involved in.
In short, UNSUB profiling is premised on two fundamental assumptions: (1) behavioral uniformity across offenses and (2) steady associations between configurations of offense behaviors and background characteristics.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "unsub", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 5 letters (nearest by frequency rank).