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to keel over

to keel over

16 5.7
Fall down suddenly because you faint or feel very weak
  • phrasal verb
  • /kil ˈoʊvər/
  • Informal
translation icon : desplomarse
  • During the marathon, several runners keeled over from exhaustion before reaching the finish line.
  • just keel over
  • suddenly keel over
  • keel over and die

But I don't think you're going to be able to jump because you can't breathe and your heart can't pump blood, so you just keel over and die before you can make your jump.

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Examples

  • Perkins manages a slight smile before he keels over dead, his duty fulfilled.

    Fiction book (1997)
  • Working on a stairclimber one afternoon last week, Stuart keeled over and died.

    Academic text (1993)
  • And if I keel over and, you know, fall down, somebody call the ambulance.

  • All of a sudden, she keeled over in a faint.

  • He keeled over from a heart attack.

  • "Died on the spot," her obituary would say, "keeled over from a broken heart."

    Fiction book (2002)
  • " We'd better get this show moving before we all keel over."

    Fiction book (1999)
  • Three months later, Will Kemp keeled over in his own garage, dead at fifty-two from a heart attack.

    Fiction book (2001)
  • You're about to keel over, you can't even lift that cannon

  • Misty and Chip stare speechless as Scotty falls to his knees and keels over.

    Fiction book (1994)

Synonyms

to fall down
vsto keel over
250 1.0

Suddenly move from a standing position to the ground or a lower level

is a sudden collapse usually from internal causes like illness or fainting
to pass out
vsto keel over
188 3.7

To faint or lose consciousness suddenly

is a sudden physical collapse that often includes losing consciousness
to go over
vsto keel over
108 3.5

To fall forward or tip onto the ground

is a sudden collapse that can result from fainting or losing balance
to topple
vsto keel over
93 4.1

To fall over or make something fall over, often suddenly when it loses balance

is an abrupt collapse usually caused by illness, exhaustion, or shock
to fall over
vsto keel over
67 1.0

To lose your balance or stop being steady and end up on the ground

is a sudden collapse more often from internal illness or weakness
tumble
vsto keel over
46 2.9

A rolling fall or gymnastic turn of the body

is a collapse that usually drops someone down quickly without rolling
to tip over
vsto keel over
27 3.0

Make something fall from a standing position

is an unexpected collapse often tied to internal illness or fainting
to keel
vsto keel over
24 5.7

To fall over suddenly, often said about boats or people

is a sudden collapse often caused by illness, exhaustion, or shock
to crumple
vsto keel over
22 3.9

Suddenly fall down because something is weak or hit hard

is a sudden fall that often follows internal illness or extreme exhaustion
to overbalance
vsto keel over
1 5.6

To lose balance and almost fall

is a sudden collapse commonly following illness, exhaustion, or severe weakness
to keeling
vsto keel over
7.0

To tip or fall over, often used for a boat moving to one side

is used for sudden collapse of people, often from illness or exhaustion
to overtip
vsto keel over
5.8

To make something tilt so far that it falls over

is a sudden collapse that often happens from fainting or shock rather than tilting
to overset
vsto keel over
6.4

To make something fall over or turn upside down

is a sudden inward collapse usually caused by illness, exhaustion, or shock
to tump over
vsto keel over
  • UK
8.2

To make something that stands fall over

is a sudden collapse typically resulting from fainting, illness, or extreme exhaustion

Antonyms

1.0

To be or put something in an upright position

748 2.5

Get back to a normal state after a loss, for example health or money

How Unstable

to collapse
579 3.9
to keel over
  • Informal
16 5.7
to stagger
49 4.0
to sway
77 2.4

Surface Forms

keel over infinitive
keeling over present participle
keels over third person singular
keled over past
keled over past participle

Morphology

keel + over

The verb 'keel' already carries the sense 'to tip over', and adding the particle 'over' reinforces the directional/resultative motion, so the combined meaning 'to fall over or collapse suddenly' is directly derivable from the parts. This follows a common verb+particle compositional pattern, so a B1 learner who knows both constituents would likely understand the MWE.

Etymology

Keel over may come from boats: the keel is the long piece along the bottom, and if a boat leaned too far it would tip and 'keel over'. So the phrase now means 'to fall over' or 'collapse suddenly', like a person who faints from heat, illness, or shock.