English Thesaurus

Synonyms of 'keel over'

(verb) 
Definition
(of a person) to collapse suddenly
(informal)  I keeled over and fell flat on my back.
Synonyms
collapse
There were people in the streets collapsing from hunger.
,
faint
I thought he'd faint when I kissed him.
,
pass out
She nearly passed out with exhaustion.
,
black out (informal)
He felt so ill that he blacked out.
,
swoon (literary)
(verb) 
Definition
(of an object) to turn upside down
The vessel keeled over towards the murky water.
Synonyms
capsize
The sea got very rough and the boat capsized.
, ,
upset
bumping into him, and almost upsetting the ginger ale
,
founder
Three ships foundered in heavy seas.
,
overturn
The lorry went out of control, overturned and smashed into a wall.
Two salmon fishermen died when their boat overturned.
,
turn over
The buggy turned over and she was thrown out.
,
lean over
,
tip over
We grabbed it just as it was about to tip over.
,
topple over
,
turn turtle

Additional synonyms

in the sense of black out
He felt so ill that he blacked out.
Synonyms
swoon,
lose consciousness,
keel over (informal),
flake out (informal),
become unconscious
in the sense of faint
Definition
to lose consciousness
I thought he'd faint when I kissed him.
Synonyms
lose consciousness,
keel over (informal),
go out,
swoon (literary),
flake out (informal)
in the sense of founder
Definition
(of a ship) to sink
Three ships foundered in heavy seas.
Synonyms
be lost,
go to the bottom

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Source

Thesaurus for keel over from the Collins English Thesaurus
#moon50
The moon is at the forefront of our minds as we celebrate the 50th anniversary of Neil Armstrong’s ‘small step’ on 20th July, 1969. This month, we’ve been exploring lunar terminology, as well as looking at how the moon has woven itself into the fabric of our everyday language.
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