suboptimal
/sʌbˈɑptɪməl/
"suboptimal" is a 10-letter English headword indexed on PlainSpell.
The verdict
“suboptimal” is uncommon English (frequency #52,656 among 6,566 “S” headwords), classed as an adjective. The kind of spelling people second-guess.
- #52,656
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Worse than optimal; of less than the highest standard or quality.
Corpus desk
Index EN-suboptimal · suboptimal · English
suboptimal · rank #52,656 · 0 variants · 0 confusables
- FREQ-RARE #52,656
- LEN-MEGA 10 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH sublimation
Nearest frequency peer: sublimation (-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 “suboptimal”
Sparse band: bars invert rank so rarer forms read shorter
- stowaway
stowaway
47,351 corpus weight
- strictures
strictures
47,348 corpus weight
- sublimation
sublimation
47,346 corpus weight
- suboptimal
suboptimal
47,345 corpus weight
- subsea
subsea
47,344 corpus weight
- swaraj
swaraj
47,342 corpus weight
What this shows Long-tail view: where “suboptimal” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | suboptimal |
| Language | English |
| Part of speech | Adjective |
| IPA | /sʌbˈɑptɪməl/ |
| Letters | 10 |
| Frequency rank | #52,656 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “suboptimal” in English
Rare enough to double-check
suboptimal is uncommon English at frequency #52,656 among 6,566 “S” headwords, classed as anadjective, transcribed /sʌbˈɑptɪməl/. Rarity is why readers land here mid-draft. Gloss: "Worse than optimal; of less than the highest standard or quality.".
No generated misspelling entries exist for suboptimal in our index, since its letter pattern doesn't lend itself to common typo substitutions. We don't track a confusable pairing for this entry, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From sub- + optimal. The correct English form is suboptimal, spelled S-U-B-O-P-T-I-M-A-L.
Definition
- 1Worse than optimal; of less than the highest standard or quality.
Recorded use
Wiktionary examplesThese source excerpts show how suboptimal appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Near-synonym: submaximal
A quickly produced suboptimal solution to a problem is often more useful than an optimal one that takes a long time to produce.
Etymology
From sub- + optimal.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "suboptimal", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 10 letters (nearest by frequency rank).