coolbox

noun

"coolbox" is a 7-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A box used to keep provisions cool.

Corpus desk

Index EN-coolbox · coolbox · English

coolbox · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "C" 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 coolbox
PropertyValue
Headwordcoolbox
LanguageEnglish
Part of speechNoun
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “coolbox” in English

coolboxranks 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

coolbox is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A box used to keep provisions cool.".

We couldn't generate a plausible misspelling set for coolbox, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From cool + box. The correct English form is coolbox, spelled C-O-O-L-B-O-X.

Definition

  1. 1
    A box used to keep provisions cool.

Etymology

From cool + box.

Synonyms

coolerice boxchilly binesky

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 "coolbox"?
"coolbox" is spelled C-O-O-L-B-O-X.
What does "coolbox" mean?
As a noun, "coolbox" means: A box used to keep provisions cool.
What is the origin of the word "coolbox"?
From cool + box. 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