cupful
/ˈkʌp̪fl̩/
"cupful" is a 6-letter English headword indexed on PlainSpell.
The verdict
“cupful” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The amount necessary to fill a cup.
| Property | Value |
|---|---|
| Headword | cupful |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈkʌp̪fl̩/ |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “cupful” sits in English frequency
Rare enough to double-check
cupful is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈkʌp̪fl̩/. Rarity is why readers land here mid-draft. 2 senses are on record.
cupful has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From Middle English copful, copfull, cupfulle, cuppefulle, equivalent to cup + -ful. Cognate with Saterland Frisian Kopful (“cupful”), West Frisian kopfol (“cupful”). The correct English form is cupful, spelled C-U-P-F-U-L.
Definition
- 1The amount necessary to fill a cup.
- 2A half pint, i.e. eight ounces
Etymology
From Middle English copful, copfull, cupfulle, cuppefulle, equivalent to cup + -ful. Cognate with Saterland Frisian Kopful (“cupful”), West Frisian kopfol (“cupful”).
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.
Frequently Asked Questions
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Using “cupful”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-U-P-F-U-L - every other letter order is a misspelling in standard orthography.
- Say it as /ˈkʌp̪fl̩/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.