monoplane
"monoplane" is a 9-letter English headword indexed on PlainSpell.
The verdict
“monoplane” is uncommon English (frequency #86,529 among 4,057 “M” headwords), classed as an adjective. The kind of spelling people second-guess.
- #86,529
- frequency rank, English
- 4,057
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Composed of, or relating to, a single plane (flat surface extending infinitely in all directions).
Corpus desk
Index EN-monoplane · monoplane · English
monoplane · rank #86,529 · 0 variants · 0 confusables
- FREQ-RARE #86,529
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH mooching
Nearest frequency peer: mooching (+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 “monoplane”
Sparse band: bars invert rank so rarer forms read shorter
- moko
moko
13,474 corpus weight
- monoplane
monoplane
13,472 corpus weight
- mooching
mooching
13,471 corpus weight
- mopey
mopey
13,470 corpus weight
- movingly
movingly
13,468 corpus weight
- Moyle
Moyle
13,467 corpus weight
What this shows Long-tail view: where “monoplane” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | monoplane |
| Language | English |
| Part of speech | Adjective |
| Letters | 9 |
| Frequency rank | #86,529 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “monoplane” in English
Rare enough to double-check
monoplane is uncommon English at frequency #86,529 among 4,057 “M” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Composed of, or relating to, a single plane (flat surface extending infinitely in all directions).".
We couldn't generate a plausible misspelling set for monoplane, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From mono- + plane. The aviation sense was formed by analogy with biplane; compare French monoplan, as well as the earlier English aeroplane, multiplane, and triplane. The correct English form is monoplane, spelled M-O-N-O-P-L-A-N-E.
Definition
- 1Composed of, or relating to, a single plane (flat surface extending infinitely in all directions).
Etymology
From mono- + plane. The aviation sense was formed by analogy with biplane; compare French monoplan, as well as the earlier English aeroplane, multiplane, and triplane.
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 "monoplane", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).