TSB
"tsb" is a 3-letter English headword indexed on PlainSpell.
The verdict
“TSB” is uncommon English (frequency #54,543 among 3,151 “T” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #54,543
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of Transportation Safety Board (“Canada”).
Corpus desk
Index EN-tsb · TSB · English
TSB · rank #54,543 · 0 variants · 0 confusables
- FREQ-RARE #54,543
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH Treviso
Nearest frequency peer: Treviso (-2 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 “TSB”
Sparse band: bars invert rank so rarer forms read shorter
- treacle
treacle
45,462 corpus weight
- trev
trev
45,461 corpus weight
- Treviso
Treviso
45,460 corpus weight
- TSB
TSB
45,458 corpus weight
- Tyree
Tyree
45,455 corpus weight
- unapproved
unapproved
45,453 corpus weight
What this shows Long-tail view: where “TSB” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | TSB |
| Language | English |
| Part of speech | Proper noun |
| Letters | 3 |
| Frequency rank | #54,543 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “TSB” in English
Rare enough to double-check
TSB is uncommon English at frequency #54,543 among 3,151 “T” headwords, classed as aproper noun. Rarity is why readers land here mid-draft. 3 senses are on record.
No generated misspelling entries exist for TSB in our index, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Our source data has no etymology on file 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 TSB, spelled T-S-B.
Definition
- 1Initialism of Transportation Safety Board (“Canada”).
- 2Initialism of Transport Safety Board (“Japan”).
- 3Initialism of Trustee Savings Bank.
Recorded use
Wiktionary exampleThese source excerpts show how TSB appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Well, it's all "according to a study by Lloyds Banking Group, whose Lloyds TSB is a London 2012 sponsor …
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 "TSB", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).