firmament
/ˈfɜːməm(ə)nt/
"firmament" is a 9-letter English headword indexed on PlainSpell.
The verdict
“firmament” has 14 generated spelling variants in the English index at frequency #48,747. The variants make it a useful spelling check.
- #48,747
- frequency rank, English
- 2,507
- “F” headwords
- 14
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The vault of the heavens, where the clouds, sun, moon, and stars can be seen; the heavens, the sky.
Corpus desk
Index EN-firmament · firmament · English
firmament · rank #48,747 · 14 variants · 1 confusable
- FREQ-MID #48,747
- LEN-LONG 9 letters
- VOW-3 3 vowels
- CONFUS-LOW 1 pairs
- VAR-HIGH 14 variants
- BOOK-MID 2,507
- PHOTO-FINISH fleck
Nearest frequency peer: fleck (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Rank peers near misspelling magnet “firmament”
Same rarity band: useful when a typo lands on a peer headword
- Feeney
Feeney
51,259 corpus weight
- figment
figment
51,256 corpus weight
- firmament
firmament
51,254 corpus weight
- fleck
fleck
51,253 corpus weight
- flipside
flipside
51,252 corpus weight
- floundering
floundering
51,250 corpus weight
What this shows “firmament” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.
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 | firmament |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈfɜːməm(ə)nt/ |
| Letters | 9 |
| Frequency rank | #48,747 |
| Misspellings tracked | 14 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Frequency seat of misspelling magnet “firmament”
A misspelling magnet
The generator records 14 spelling variants around firmament (IPA /ˈfɜːməm(ə)nt/), anoun. Corpus frequency is #48,747 among 2,507 “F” headwords. Wiktionary lists 7 senses, so context still picks the gloss.
Our generated misspelling index lists 14 likely wrong-spelling variants for firmament, with forms such as "ffirmament", "fimrament", and "firamment". 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 1 confusable-pair relationship, "filament", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Middle English firmament, furmament (“heaven; sky”), from Old French firmament (“firmament”), or from its etymon Latin firmāmentum (“support; sky”), from firmāre (“to strengthen”) + -mentum (suffix indicating an instrument or medium, or the result of a… The correct English form is firmament, spelled F-I-R-M-A-M-E-N-T.
Definition
- 1The vault of the heavens, where the clouds, sun, moon, and stars can be seen; the heavens, the sky.
- 2The field or sphere of an activity or interest.
- 3In the geocentric Ptolemaic system, the eighth celestial sphere which carried the fixed stars; (countable, by extension) any celestial sphere.
- 4The abode of God and the angels; heaven.
- 5A piece of jewellery worn in a headdress with numerous gems resembling stars in the sky.
- 6A basis or foundation; a support.
- 7The act or process of making firm or strengthening.
Recorded use
Wiktionary examplesThese source excerpts show how firmament appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
And thei that be wiſe, ſhal ſhine, as the brightnes of the firmament: & they that turne to righteouſnes, ſhal ſhine as the ſtarres, for euer and euer.
[T]his moſt excellent Canopie the ayre, looke you, this braue orehanging firmament, this maieſticall roofe fretted with golden fire, why it appeareth nothing to me but a foule and peſtilent congregation of vapoures.
Etymology
From Middle English firmament, furmament (“heaven; sky”), from Old French firmament (“firmament”), or from its etymon Latin firmāmentum (“support; sky”), from firmāre (“to strengthen”) + -mentum (suffix indicating an instrument or medium, or the result of an action). Firmāre is the present active infinitive of firmō (“to make firm, strengthen”), from firmus (“firm, strong, stable”), ultimately from Proto-Indo-European *dʰer- (“to hold; to support”). The Latin word was used in the Vulgate version of the Bible to translate the Ancient Greek στερέωμα (steréōma, “foundation, framework; firmament”) in the Septuagint (Greek Old Testament), which in turn was used to translate the Hebrew רָקִיעַ (rāqī́aʿ, “celestial dome, vault of heaven”), from the root ר־ק־ע (r-q-`); in Classical Syriac the similar root ܪ ܩ ܥ (related to compacting) gave rise to ܪܩܝܥܐ (rəqīʿā, “compact; firm; firmament, heavens, sky; celestial sphere”).
This word in other languages
Common misspellings
Also misspelled as:
- ffirmament
- fimrament
- firamment
- firmaemnt
- firmamennt
- firmamentt
- firmametn
- firmamment
- firmamnet
- firmmaent
- firmmament
- firrmament
- frimament
- ifrmament
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of firmament - 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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "firmament", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (14 here; floor ≥5).