eta
/ˈiːtə/
"eta" is a 3-letter English headword indexed on PlainSpell.
The verdict
“eta” is a moderately-common English word, ranked #17,836 in English word frequency and used as a noun.
- #17,836
- frequency rank, English
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.
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 | eta |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈiːtə/ |
| Letters | 3 |
| Frequency rank | #17,836 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “eta” sits in English frequency
Spelling & Dictionary Insight
The English entry for eta is 3 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈiːtə/. Corpus data places it at rank #17,836 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
eta doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. It also participates in 20 confusable-pair relationships, "ex", "EU", "EV", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Ancient Greek ἦτα (êta). The correct English form is eta, spelled E-T-A.
Definition
- 1The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.
- 2A kind of electrically neutral meson having zero spin and isospin.
Etymology
From Ancient Greek ἦτα (êta).
This word in other languages
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 “eta”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is E-T-A - every other letter order is a misspelling in standard orthography.
- Say it as /ˈiːtə/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “ex” - see the side-by-side comparison. eta vs ex
- 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.