English Thesaurus

Synonyms of 'betray'

(verb) 
Definition
to hand over or expose (one's nation, friend, etc.) treacherously to an enemy
He might be seen as having betrayed his mother.
Synonyms
be disloyal to
,
break with
,
grass on (British, slang)
,
dob in (Australian, slang)
,
double-cross (informal)
They were frightened of being double-crossed.
,
stab in the back
,
be unfaithful to
,
sell down the river (informal)
,
grass up (slang)
,
shop (slang, mainly British)
Fraudsters are often shopped by honest friends and neighbours.
,
put the finger on (informal)
,
inform on or against
,
sell out (informal)
,
be treacherous to
(verb) 
Definition
to disclose (a secret or confidence) treacherously
She studied his face, but it betrayed nothing.
Synonyms
give away
,
tell
The facts tell a very different story.
,
show
She had enough time to show her gratitude.
,
reveal
She has refused to reveal her daughter's whereabouts.
,
expose
After the scandal was exposed, he moved abroad.
,
disclose
clapboard façades that revolve to disclose snug interiors
,
uncover
Auditors said they had uncovered evidence of fraud.
,
manifest
He's only convincing when that inner fury manifests itself.
,
divulge
He was charged with divulging state secrets.
,
blurt out
,
unmask
Elliott unmasked the master spy and traitor.
,
lay bare
,
tell on
,
let slip
,
evince (formal)
He had never, hitherto, evinced any particular interest in economic matters.
(verb) 
Synonyms
abandon
She claimed that her friends had abandoned her.
,
desert
He deserted our team years ago.
,
walk out on
,
forsake
I still love him and would never forsake him.
,
jilt
She was jilted by her first fiancé.

Quotation

To betray, you must first belong [Kim Philby]

Additional synonyms

in the sense of desert
Definition
to abandon (a person or place) without intending to return
He deserted our team years ago.
Synonyms
dump (informal),
ditch (informal),
walk out on (informal),
run out on (informal),
throw over,
leave stranded,
leave high and dry,
leave (someone) in the lurch
in the sense of disclose
Definition
to allow to be seen
clapboard façades that revolve to disclose snug interiors
Synonyms
lay bare,
bring to light,
take the wraps off
in the sense of divulge
Definition
to make known
He was charged with divulging state secrets.
Synonyms
make known,
spill (informal),
let slip,
blow wide open (slang),
get off your chest (informal),
cough (slang),
out (informal),
spill your guts about (slang)

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English Translation of "betray"
English Translation of "betray"
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Video: pronunciation of 'betray'

Source

Thesaurus for betray 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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