duty-free

adj

"duty-free" is a 8-letter English headword indexed on PlainSpell.

The verdict

“duty-free” is uncommon English (outside the top frequency list), classed as an adjective. 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) - Exempt from duty, especially from customs duty.

Corpus desk

Index EN-duty-free · duty-free · English

duty-free · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "D" 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.

Key facts for duty-free
PropertyValue
Headwordduty-free
LanguageEnglish
Part of speechAdjective
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “duty-free” in English

duty-freeranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

duty-free is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Exempt from duty, especially from customs duty.".

We couldn't generate a plausible misspelling set for duty-free, typically a sign the spelling maps closely to how the word sounds. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From duty + -free. The correct English form is duty-free, spelled D-U-T-Y---F-R-E-E.

Definition

  1. 1
    Exempt from duty, especially from customs duty.

Recorded use

Wiktionary example

These source excerpts show how duty-free appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. CBP told CNN it currently processes “nearly 4 million duty-free de minimis shipments a day.”

Etymology

From duty + -free.

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

How do you spell "duty-free"?
"duty-free" is spelled D-U-T-Y---F-R-E-E.
What does "duty-free" mean?
As an adjective, "duty-free" means: Exempt from duty, especially from customs duty.
What is the origin of the word "duty-free"?
From duty + -free. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list