full moon
"full-moon" is a 8-letter English headword indexed on PlainSpell.
The verdict
“full moon” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The phase of the moon when it is in opposition to the sun and its full disc is therefore visible.
Corpus desk
Index EN-full-moon · full moon · English
full moon · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "F" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | full moon |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “full moon” in English
Rare enough to double-check
full moon is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
full moon doesn't appear in our generated misspelling index, since its letter pattern doesn't lend itself to common typo substitutions. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From Middle English ful mone, from Old English full mōna, equivalent to full + moon. The correct English form is full moon, spelled F-U-L-L- -M-O-O-N.
Definition
- 1The phase of the moon when it is in opposition to the sun and its full disc is therefore visible.
- 2The moon when it is in opposition to the sun.
Recorded use
Wiktionary exampleThese source excerpts show how full moon appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
It is true also that the roosters, especially during full moon, crow all night.
Etymology
From Middle English ful mone, from Old English full mōna, equivalent to full + moon.
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). See the methodology for how each field is sourced and updated.