attaché case

noun

"attache-case" is a 11-letter English headword indexed on PlainSpell.

The verdict

“attaché case” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A box-style briefcase, scrunched over a hinged frame that opens into two compartments.

Corpus desk

Index EN-attache-case · attaché case · English

attaché case · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "A" 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 attaché case
PropertyValue
Headwordattaché case
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “attaché case” in English

attaché casesits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

attaché case is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A box-style briefcase, scrunched over a hinged frame that opens into two compartments.".

We couldn't generate a plausible misspelling set for attaché case, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From French attaché + case. The correct English form is attaché case, spelled A-T-T-A-C-H-É- -C-A-S-E.

Definition

  1. 1
    A box-style briefcase, scrunched over a hinged frame that opens into two compartments.

Etymology

From French attaché + case.

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 "attaché case"?
"attaché case" is spelled A-T-T-A-C-H-É- -C-A-S-E.
What does "attaché case" mean?
As a noun, "attaché case" means: A box-style briefcase, scrunched over a hinged frame that opens into two compartments.
What is the origin of the word "attaché case"?
From French attaché + case. 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