English Thesaurus

Synonyms of 'proof'

(noun) 
Definition
any evidence that confirms that something is true or exists
You must have proof of residence in the state.
Synonyms
evidence
There is no evidence to support this theory.
,
demonstration
an unprecedented demonstration of people power
,
testimony
Her living room piled with documents is a testimony to her dedication to her work.
,
confirmation
He took her resignation as confirmation of their suspicions.
,
verification
There is no independent verification of this story.
,
certification
,
corroboration
There were no witnesses to establish corroboration of his version of the accident.
,
authentication
,
substantiation
,
attestation
(noun) 
Definition
an early copy of printed matter for checking before final production
I'm correcting the proofs of the Spanish edition right now.
Synonyms
trial print
, , , ,
page proof
,
galley proof
,
trial impression
(noun) 
Definition
the act of testing the truth of something
Our piety is put to the proof.
Synonyms
test
High levels of dioxin were confirmed by scientific tests.
,
trial
They have been treated with medication in clinical trials.
,
experiment
a proposed new law banning animal experiments
,
examination
They have taken the documents away for examination.
,
scrutiny
His private life came under media scrutiny.
,
ordeal
the painful ordeal of identifying the body
,
(adjective) 
Definition
able to withstand
The fortress was proof against attack.
Synonyms
impervious
The floorcovering will need to be impervious to water.
, ,
tight
Cover with foil and the lid to ensure a tight seal.
,
resistant
The body may be less resistant if it is cold.
,
impenetrable
The range forms an impenetrable barrier between Europe and Asia.
,
repellent
a shower repellent jacket

proverb

The proof of the pudding is in the eating

Additional synonyms

in the sense of assay
Definition
an analysis of the purity of an ore or precious metal
in the sense of confirmation
Definition
something that confirms
He took her resignation as confirmation of their suspicions.
Synonyms
validation,
authentication,
substantiation
in the sense of corroboration
There were no witnesses to establish corroboration of his version of the accident.
Synonyms
documentation,
certification,
validation,
authentication,
substantiation,
sustainment,
circumstantiation

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Video: pronunciation of 'proof'

Source

Thesaurus for proof from the Collins English Thesaurus
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