keel over

/ˈkiːl ˈəʊvə(ɹ)/

//ˈkiːl ˈəʊvə(ɹ)// verb

"keel-over" is a 8-letter English headword indexed on PlainSpell.

The verdict

“keel over” is uncommon English (outside the top frequency list), classed as a verb. 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) - Of a vessel: to roll so far on its side that it cannot recover; to capsize or turn turtle.

Corpus desk

Index EN-keel-over · keel over · English

keel over · 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 "K" 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 keel over
PropertyValue
Headwordkeel over
LanguageEnglish
Part of speechVerb
IPA/ˈkiːl ˈəʊvə(ɹ)/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “keel over” in English

keel overranks 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

keel over is uncommon English outside the top frequency list, classed as averb, transcribed /ˈkiːl ˈəʊvə(ɹ)/. Rarity is why readers land here mid-draft. 3 senses are on record.

Zero misspellings are on record for keel over in our index, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: The original nautical meaning (sense 1) refers to a vessel rolling to the extent that its keel (“a large beam along the underside of the vessel’s hull from bow to stern”) is visible. The correct English form is keel over, spelled K-E-E-L- -O-V-E-R.

Definition

  1. 1
    Of a vessel: to roll so far on its side that it cannot recover; to capsize or turn turtle.
  2. 2
    To collapse in a faint; to black out, to swoon.
  3. 3
    To die.

Recorded use

Wiktionary examples

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

  1. What a tiny little schooner! But is it not bold to spread both sails? And see, now that we have come round to the wind, how the skiff keels over.
  2. [H]is bandaged cry was, to beach him on the whale's topmost back. Nothing loath, his bowsman hauled him up and up, through a blinding foam that blent two whitenesses together; till of a sudden the boat struck as against a sunken ledge, and keeling over, spilled out the standing mate.

Etymology

The original nautical meaning (sense 1) refers to a vessel rolling to the extent that its keel (“a large beam along the underside of the vessel’s hull from bow to stern”) is visible.

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 "keel over"?
"keel over" is spelled K-E-E-L- -O-V-E-R. The IPA pronunciation is /ˈkiːl ˈəʊvə(ɹ)/.
What does "keel over" mean?
As a verb, "keel over" means: Of a vessel: to roll so far on its side that it cannot recover; to capsize or turn turtle.
How do you pronounce "keel over"?
The IPA (International Phonetic Alphabet) transcription for "keel over" is /ˈkiːl ˈəʊvə(ɹ)/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "keel over"?
The original nautical meaning (sense 1) refers to a vessel rolling to the extent that its keel (“a large beam along the underside of the vessel’s hull from bow to stern”) is visible. 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