NTSB
"ntsb" is a 4-letter English headword indexed on PlainSpell.
The verdict
“NTSB” has 7 generated spelling variants in the English index at frequency #39,935. The variants make it a useful spelling check.
- #39,935
- frequency rank, English
- 24,391
- “N” headwords
- 7
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Initialism of National Transportation Safety Board.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | NTSB |
| Language | English |
| Part of speech | Proper noun |
| Letters | 4 |
| Frequency rank | #39,935 |
| Misspellings tracked | 7 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “NTSB” sits in English frequency
A misspelling magnet
The generator records 7 spelling variants around NTSB, aproper noun. Corpus frequency is #39,935 among 24,391 “N” headwords. Wiktionary lists 2 senses, so context still picks the gloss.
Our generated misspelling index lists 7 likely wrong-spelling variants for NTSB, with forms such as "nntsb", "nstb", and "ntbs". 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 20 confusable-pair relationships, "NWS", "nuts", "numb", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
This entry carries no recorded etymology, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is NTSB, spelled N-T-S-B.
Definition
- 1Initialism of National Transportation Safety Board.
- 2Initialism of National Transport Safety Board.
Common misspellings
Also misspelled as:
- nntsb
- nstb
- ntbs
- ntsbb
- ntssb
- nttsb
- tnsb
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of NTSB - 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.
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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Using “NTSB”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is N-T-S-B - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “NWS” - see the side-by-side comparison. NTSB vs NWS
- Browse more English words and confusable pairs in the same reference. English words
Same frequency band
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.