English Thesaurus
(verb) 
Definition
to fall or move with a sudden noise
She flopped, exhausted, onto a sofa.
Synonyms
slump
I closed the door and slumped into a chair.
,
fall
Her father fell into the sea after a massive heart attack.
,
drop
Temperatures can drop to freezing at night.
,
collapse
A section of the Bay Bridge had collapsed.
,
sink
Kate laughed, and sank down again to her seat.
,
tumble
The dog had tumbled down the cliff.
,
topple
He released his hold and toppled slowly backwards.
(verb) 
Definition
to bend, fall, or collapse loosely or carelessly
His hair flopped over his left eye.
Synonyms
hang down
,
hang
the shawl hanging loose from her shoulders
,
dangle
A gold bracelet dangled from her left wrist.
,
sag
He shrugged and sagged into a chair.
,
droop
a young man with a drooping moustache
,
hang limply
(verb) 
Definition
to fail
(informal)  The film flopped badly at the box office.
Synonyms
fail
He was afraid the revolution they had started would fail.
, ,
bomb (US, Canadian, slang)
,
fold (informal)
The company folded in 1990.
,
founder
The talks have foundered.
,
fall short
,
fall flat
,
come to nothing
,
come unstuck
, ,
go belly-up (slang)
,
go down like a lead balloon (informal)
Opposites
,
make it (informal)
, , , , ,
have legs (informal)
,
make a hit
(noun) 
Definition
a complete failure
(informal)  The public decide whether a film is a hit or a flop.
Synonyms
failure
The policy is doomed to failure.
,
disaster
The whole production was a disaster.
,
loser
the winners and losers of this year's Super Bowl
,
fiasco
The party was a bit of a fiasco.
,
debacle
the convention was a debacle
,
washout (informal)
The concert was a total washout.
,
cockup (British, slang)
,
nonstarter
The United States is certain to reject the proposal as a non-starter.
Opposites

Additional synonyms

in the sense of collapse
Definition
to fall down or cave in suddenly
A section of the Bay Bridge had collapsed.
Synonyms
in the sense of dangle
Definition
to hang loosely
A gold bracelet dangled from her left wrist.
Synonyms
hang down,
depend
in the sense of debacle
Definition
something that ends in a disastrous failure, esp. because it has not been properly planned
the convention was a debacle

See related content

English Translation of "flop"
English Translation of "flop"
NEW from Collins!
NEW from Collins!
English Word Lists
English Word Lists
Latest Word Submissions
Latest Word Submissions
Easy Learning English Grammar
Easy Learning English Grammar
COBUILD Grammar Patterns
COBUILD Grammar Patterns
Word Lover's Blog
Word Lover's Blog
Online Scrabble Checker
Online Scrabble Checker
The Paul Noble Method
The Paul Noble Method

Video: pronunciation of 'flop'

Source

Thesaurus for flop 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.
Create an account and sign in to access this FREE content
Register now or login in to access