keel
C1Technical, Literary, Figurative
Definition
Meaning
The main structural member running lengthwise along the centre of the bottom of a ship or boat.
To collapse or fall over suddenly, especially in the context of a ship rolling onto its side. Also used figuratively to mean losing composure or stability.
Linguistics
Semantic Notes
As a noun, it primarily denotes a nautical structural element. As a verb, it is most commonly used in the phrasal verb 'keel over', describing a sudden collapse or faint.
Dialectal Variation
British vs American Usage
Differences
No significant differences in core meaning. The noun is used identically. The verb form 'keel' (without 'over') meaning to capsize is slightly more archaic in both varieties.
Connotations
Nautical heritage term; evokes images of traditional sailing ships and stability.
Frequency
Low frequency in everyday conversation, except in the idiom 'keel over'.
Vocabulary
Collocations
Grammar
Valency Patterns
[V] keel over[N] of the ship[V] to keel (archaic)lay the [N]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “on an even keel (stable, calm)”
- “keel over (to collapse or faint)”
- “lay the keel (to start a major project)”
Usage
Context Usage
Business
Used figuratively: 'We need to get the project back on an even keel.'
Academic
Rare, except in historical or engineering contexts discussing shipbuilding.
Everyday
Almost exclusively in the idiom 'keel over': 'The heat was so intense I thought I'd keel over.'
Technical
Primary context: naval architecture, sailing, boat construction.
Examples
By Part of Speech
verb
British English
- The old yacht finally keeled over in the storm.
- He looked ready to keel over after the marathon.
American English
- The sailboat keeled over in the strong wind.
- I almost keeled over from laughter.
adverb
British English
- N/A
American English
- N/A
adjective
British English
- N/A
American English
- N/A
Examples
By CEFR Level
- The big ship has a strong keel.
- The boat might keel over if the wind is too strong.
- After the shock, she almost keeled over on the spot.
- The ship's keel was damaged on the rocks.
- The company's finances are finally back on an even keel after the restructuring.
- The ceremony for laying the keel of the new aircraft carrier took place today.
Learning
Memory Aids
Mnemonic
Think of a KEY part of a ship that runs down the middle like a LONG EEL. The KEY-EEL keeps the ship stable.
Conceptual Metaphor
STABILITY IS AN EVEN KEEL / SUDDEN FAILURE IS A SHIP CAPSIZING.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Не путать с 'кильватер' (wake). 'Keel' это киль (конструкция), а не след. 'Keel over' означает резко упасть/потерять сознание, а не просто опрокинуться.
Common Mistakes
- Using 'keel' as a standalone verb for 'fall' instead of the phrasal verb 'keel over'. Confusing 'keel' with 'kneel'.
Practice
Quiz
What does the idiom 'on an even keel' mean?
FAQ
Frequently Asked Questions
No, it's a low-frequency word outside of nautical contexts and the specific idiom 'keel over'.
Rarely. The transitive verb ('to keel a ship') is archaic. The intransitive use is almost always part of the phrasal verb 'keel over'.
'Keel over' implies a sudden, often dramatic, falling or collapse, and can be used for people fainting. 'Capsize' is strictly for boats/ships turning over in the water.
No, the spelling is identical in both varieties.