Thu
"thu" is a 3-letter English headword indexed on PlainSpell.
The verdict
“Thu” is a moderately-common English word, ranked #24,339 in English word frequency and used as a proper noun.
- #24,339
- frequency rank, English
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A surname.
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 | Thu |
| Language | English |
| Part of speech | Proper noun |
| Letters | 3 |
| Frequency rank | #24,339 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “Thu” sits in English frequency
Spelling & Dictionary Insight
The English entry for Thu is 3 letters long, classified as a proper noun. Corpus data places it at rank #24,339 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "A surname.".
We couldn't generate a plausible misspelling set for Thu, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "to", "TV", "TL", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: Two main origins: * Borrowed from Vietnamese Thư, the local romanization of the Chinese surname 舒 (Shū). * Borrowed from Norwegian Thu, a surname predominantly found in Western Norway. The correct English form is Thu, spelled T-H-U.
Definition
- 1A surname.
Etymology
Two main origins: * Borrowed from Vietnamese Thư, the local romanization of the Chinese surname 舒 (Shū). * Borrowed from Norwegian Thu, a surname predominantly found in Western Norway.
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 “Thu”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-H-U - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “to” - see the side-by-side comparison. Thu vs to
- Browse more English words and confusable pairs in the same reference. English words
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.