customs union
"customs-union" is a 12-letter English headword indexed on PlainSpell.
The verdict
“customs union” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A type of trade bloc which is composed of a free trade area with a common external tariff.
| Property | Value |
|---|---|
| Headword | customs union |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “customs union” sits in English frequency
Rare enough to double-check
customs union is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A type of trade bloc which is composed of a free trade area with a common external tariff.".
No generated misspelling entries exist for customs union in our index, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.
No borrowing history is documented for this entry, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is customs union, spelled C-U-S-T-O-M-S- -U-N-I-O-N.
Definition
- 1A type of trade bloc which is composed of a free trade area with a common external tariff.
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 “customs union”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-U-S-T-O-M-S- -U-N-I-O-N - every other letter order is a misspelling in standard orthography.
- 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.