filth
/fɪlθ/
"filth" is a 5-letter English headword indexed on PlainSpell.
The verdict
“filth” is a moderately-common English word, ranked #16,914 in English word frequency and used as a noun.
- #16,914
- frequency rank, English
- 5
- letters
- 8
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Dirt; foul matter; that which soils or defiles.
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 | filth |
| Language | English |
| Part of speech | Noun |
| IPA | /fɪlθ/ |
| Letters | 5 |
| Frequency rank | #16,914 |
| Misspellings tracked | 8 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “filth” sits in English frequency
Spelling & Dictionary Insight
The English entry for filth is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /fɪlθ/. Corpus data places it at rank #16,914 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 8 likely wrong-spelling variants for filth, with forms such as "ffilth", "filht", and "fillth". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "fit", "fish", "fits", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Middle English filth, from Old English fȳlþu, from Proto-West Germanic *fūliþu, equivalent to foul + -th (abstract nominal suffix). The correct English form is filth, spelled F-I-L-T-H.
Definition
- 1Dirt; foul matter; that which soils or defiles.
- 2Smut; that which sullies or defiles the moral character; corruption; pollution.
- 3A vile or disgusting person.
- 4Weeds growing on pasture land.
Etymology
From Middle English filth, from Old English fȳlþu, from Proto-West Germanic *fūliþu, equivalent to foul + -th (abstract nominal suffix).
Common misspellings
Also misspelled as: ffilth,filht,fillth,filthh,filtth,fitlh,flith,iflth
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of filth - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 “filth”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is F-I-L-T-H - every other letter order is a misspelling in standard orthography.
- Say it as /fɪlθ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “fit” - see the side-by-side comparison. filth vs fit
- 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.