forth

/fɔːθ/

//fɔːθ// adv

"forth" is a 5-letter English headword indexed on PlainSpell.

The verdict

“forth” is a regularly-used English word, ranked #3,625 in English word frequency and used as an adverb.

#3,625
frequency rank, English
5
letters
7
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Forward in time, place or degree.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

forth vs forum
60% similar
forth vs forty
80% similar
forth vs froth
60% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for forth
PropertyValue
Headwordforth
LanguageEnglish
Part of speechAdverb
IPA/fɔːθ/
Letters5
Frequency rank#3,625
Misspellings tracked7
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “forth” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). forth lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for forth is 5 letters long, classified as an adverb, and transcribed in the International Phonetic Alphabet as /fɔːθ/. Corpus data places it at rank #3,625 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 7 likely wrong-spelling variants for forth, with forms such as "fforth", "forht", and "forrth". 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, "forum", "forty", "froth", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Middle English forth, from Old English forþ, from Proto-West Germanic *forþ, from Proto-Germanic *furþą, from Proto-Indo-European *pŕ̥-to-, from *per-. Cognates include Dutch voort and German fort. See also ford. The correct English form is forth, spelled F-O-R-T-H.

Definition

  1. 1
    Forward in time, place or degree.
  2. 2
    Out into view; from a particular place or position.
  3. 3
    Beyond a (certain) boundary; away; abroad; out.

Etymology

From Middle English forth, from Old English forþ, from Proto-West Germanic *forþ, from Proto-Germanic *furþą, from Proto-Indo-European *pŕ̥-to-, from *per-. Cognates include Dutch voort and German fort. See also ford.

Synonyms

Common misspellings

Also misspelled as: fforth,forht,forrth,forthh,fortth,fotrh,ofrth

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of forth - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

fforth1forht2forrth1forthh1fortth1fotrh2ofrth2
Edit distance from "forth"

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

How do you spell "forth"?
"forth" is spelled F-O-R-T-H. The IPA pronunciation is /fɔːθ/.
What does "forth" mean?
As an adverb, "forth" means: Forward in time, place or degree.
What words are commonly confused with "forth"?
"forth" is commonly confused with "forum", "forty", "froth". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "forth"?
The IPA (International Phonetic Alphabet) transcription for "forth" is /fɔːθ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "forth"?
From Middle English forth, from Old English forþ, from Proto-West Germanic *forþ, from Proto-Germanic *furþą, from Proto-Indo-European *pŕ̥-to-, from *per-. Cognates include Dutch voort and German fort. See also ford. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “forth”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-O-R-T-H - every other letter order is a misspelling in standard orthography.
  • Say it as /fɔːθ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “forum” - see the side-by-side comparison. forth vs forum
  • 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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list