herein
/hɪɹˈɪn/
"herein" is a 6-letter English headword indexed on PlainSpell.
The verdict
“herein” is a moderately-common English word, ranked #11,897 in English word frequency and used as an adverb.
- #11,897
- frequency rank, English
- 6
- letters
- 8
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - In this; within this content, context, or thing.
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 | herein |
| Language | English |
| Part of speech | Adverb |
| IPA | /hɪɹˈɪn/ |
| Letters | 6 |
| Frequency rank | #11,897 |
| Misspellings tracked | 8 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “herein” sits in English frequency
Spelling & Dictionary Insight
The English entry for herein is 6 letters long, classified as an adverb, and transcribed in the International Phonetic Alphabet as /hɪɹˈɪn/. Corpus data places it at rank #11,897 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "In this; within this content, context, or thing.".
Our generated misspelling index lists 8 likely wrong-spelling variants for herein, with forms such as "ehrein", "heerin", and "hereinn". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "heron", "heroin", "heroic", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From Middle English here-inne, her-in, her-inne, hier-ine, from Old English hērinne, from Proto-West Germanic *hērinna, from Proto-Germanic *hē₂rinna, equivalent to here + in. Cognate with West Frisian hjiryn (“herein”), Dutch hierin (“herein”), German hier… The correct English form is herein, spelled H-E-R-E-I-N.
Definition
- 1In this; within this content, context, or thing.
Etymology
From Middle English here-inne, her-in, her-inne, hier-ine, from Old English hērinne, from Proto-West Germanic *hērinna, from Proto-Germanic *hē₂rinna, equivalent to here + in. Cognate with West Frisian hjiryn (“herein”), Dutch hierin (“herein”), German hierin (“herein”), Danish heri (“herein”), Swedish häri (“herein”), Icelandic hér í (“herein”).
This word in other languages
Common misspellings
Also misspelled as: ehrein,heerin,hereinn,hereni,herien,herrein,hherein,hreein
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of herein - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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 “herein”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is H-E-R-E-I-N - every other letter order is a misspelling in standard orthography.
- Say it as /hɪɹˈɪn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “heron” - see the side-by-side comparison. herein vs heron
- 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.