T9
/ti naɪn/
"t9" is a 1-letter English headword indexed on PlainSpell.
The verdict
“T9” is uncommon English (frequency #66,330 among 3,151 “T” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #66,330
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - a late-1990s predictive text technology by Tegic Communications for mobile phones with a 3×4 numeric keypad
Corpus desk
Index EN-t9 · T9 · English
T9 · rank #66,330 · 0 variants · 0 confusables
- FREQ-RARE #66,330
- LEN-SHORT 2 letters
- VOW-0 0 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH tahini
Nearest frequency peer: tahini (+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 “T9”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- swindling
swindling
33,674 corpus weight
- séance
séance
33,673 corpus weight
- T9
T9
33,671 corpus weight
- tahini
tahini
33,670 corpus weight
- tailback
tailback
33,669 corpus weight
- tailwind
tailwind
33,668 corpus weight
What this shows Bars show where “T9” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | T9 |
| Language | English |
| Part of speech | Proper noun |
| IPA | /ti naɪn/ |
| Letters | 2 |
| Frequency rank | #66,330 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “T9” sits in English frequency
Rare enough to double-check
T9 is uncommon English at frequency #66,330 among 3,151 “T” headwords, classed as aproper noun, transcribed /ti naɪn/. Rarity is why readers land here mid-draft. Gloss: "a late-1990s predictive text technology by Tegic Communications for mobile phones with a 3×4 numeric keypad".
T9 doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From "Text on 9 keys". The correct English form is T9, spelled T-9.
Definition
- 1a late-1990s predictive text technology by Tegic Communications for mobile phones with a 3×4 numeric keypad
Etymology
From "Text on 9 keys".
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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What to do next
You've looked up "T9". Here's where to go from here.
- Usage frequency rank #66,330 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.