sustainment
"sustainment" is a 11-letter English headword indexed on PlainSpell.
The verdict
“sustainment” is uncommon English (frequency #65,546 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #65,546
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of sustaining something.
Corpus desk
Index EN-sustainment · sustainment · English
sustainment · rank #65,546 · 0 variants · 0 confusables
- FREQ-RARE #65,546
- LEN-MEGA 11 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH superoxide
Nearest frequency peer: superoxide (-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.
Long-tail ranks near “sustainment”
Sparse band: bars invert rank so rarer forms read shorter
- superoxide
superoxide
34,456 corpus weight
- sustainment
sustainment
34,455 corpus weight
- swashbuckli…
swashbuckling
34,454 corpus weight
- swill
swill
34,453 corpus weight
- Syr
Syr
34,451 corpus weight
- tabi
tabi
34,450 corpus weight
What this shows Long-tail view: where “sustainment” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | sustainment |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #65,546 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “sustainment” in English
Rare enough to double-check
sustainment is uncommon English at frequency #65,546 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The act of sustaining something.".
Zero misspellings are on record for sustainment in our index, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From sustain + -ment. The correct English form is sustainment, spelled S-U-S-T-A-I-N-M-E-N-T.
Definition
- 1The act of sustaining something.
Recorded use
Wiktionary examplesThese source excerpts show how sustainment appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Mary heard with sorrow, and fear also, of the projected journey; but the altered expression of Isabella's countenance was a great palliative—dreadful as it was that her husband should love another (and of that distressing fact it was impossible to doubt), his confidence was consoling; and her power to prove the firmness of her character, her right to his…
Otherwise, the sustainment or creation of jobs is seriously imperiled.
Etymology
From sustain + -ment.
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
How do you spell "sustainment"?
What does "sustainment" mean?
What is the origin of the word "sustainment"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "sustainment", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 11 letters (nearest by frequency rank).