TTR
/ˌtiː ˌtiː ˈɑː/
"ttr" is a 3-letter English headword indexed on PlainSpell.
The verdict
“TTR” is uncommon English (frequency #79,153 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #79,153
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of transthyretin.
Corpus desk
Index EN-ttr · TTR · English
TTR · rank #79,153 · 0 variants · 0 confusables
- FREQ-RARE #79,153
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH Tsushima
Nearest frequency peer: Tsushima (-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.
Frequency neighbourhood for “TTR”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- trisomy
trisomy
20,853 corpus weight
- Tsushima
Tsushima
20,849 corpus weight
- TTR
TTR
20,848 corpus weight
- turbid
turbid
20,847 corpus weight
- UEA
UEA
20,846 corpus weight
- UNFCCC
UNFCCC
20,843 corpus weight
What this shows Bars show where “TTR” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | TTR |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌtiː ˌtiː ˈɑː/ |
| Letters | 3 |
| Frequency rank | #79,153 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “TTR” sits in English frequency
Rare enough to double-check
TTR is uncommon English at frequency #79,153 among 3,151 “T” headwords, classed as anoun, transcribed /ˌtiː ˌtiː ˈɑː/. Rarity is why readers land here mid-draft. 2 senses are on record.
No generated misspelling entries exist for TTR in our index, a straightforward case of a spelling with little room for common typos. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.
No documented word history exists for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is TTR, spelled T-T-R.
Definition
- 1Abbreviation of transthyretin.
- 2Abbreviation of type-token ratio.
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 "TTR", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).
What to do next
You've looked up "TTR". Here's where to go from here.
- Usage frequency rank #79,153 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "T" letter cohort. T–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.