cos lettuce

noun

"cos-lettuce" is a 10-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Synonym of romaine lettuce, a long-leaved variety of lettuce.

Corpus desk

Index EN-cos-lettuce · cos lettuce · English

cos lettuce · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-4 4 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 cos lettuce
PropertyValue
Headwordcos lettuce
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cos lettuce” in English

cos lettuceranks 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

cos lettuce is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Synonym of romaine lettuce, a long-leaved variety of lettuce.".

No misspelling variants are generated for cos lettuce in our index, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Uncertain. Variously derived from Cos, an alternative spelling of the Greek island of Kos, or from Arabic خس (ḵass, “lettuce”). The correct English form is cos lettuce, spelled C-O-S- -L-E-T-T-U-C-E.

Definition

  1. 1
    Synonym of romaine lettuce, a long-leaved variety of lettuce.

Etymology

Uncertain. Variously derived from Cos, an alternative spelling of the Greek island of Kos, or from Arabic خس (ḵass, “lettuce”).

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 "cos lettuce"?
"cos lettuce" is spelled C-O-S- -L-E-T-T-U-C-E.
What does "cos lettuce" mean?
As a noun, "cos lettuce" means: Synonym of romaine lettuce, a long-leaved variety of lettuce.
What is the origin of the word "cos lettuce"?
Uncertain. Variously derived from Cos, an alternative spelling of the Greek island of Kos, or from Arabic خس (ḵass, “lettuce”). 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