testify has definitions from the field of law
1
[ verb ] (law) give testimony in a court of law

Used in print

(Rocky Mountain News, [Denver, Colorado]...)

I can testify that motels , service and comfort_stations ( they go together like Scots and heather ) , dog wagons , roadside restaurants , souvenir stands and snake farms are braced and waiting .

(Chicago Daily Tribune,...)

Vital secrets of Britain 's first atomic submarine , the Dreadnought , and , by implication , of the entire United_States navy 's still-building nuclear sub fleet , were stolen by a London-based soviet spy ring , secret_service agents testified today .

When arrested , he had the submarine secrets on a roll of candid_camera film as_well as anti-submarine secrets in Christmas_gift wrapping , it was testified .

The spy ring also was particularly interested in ASDIC , the underwater equipment for detecting submarines , it was testified .

But court adjourned after he testified he introduced James_White and Jeremiah_Hope_Pullings , two of the defendants , and also introduced Pullings to Jessy_Maroy , a man mentioned in the indictment but not indicted .

2
[ verb ] provide evidence for

Examples

"The blood test showed that he was the father" "Her behavior testified to her incompetence"

Used in print

(Arlin Turner, "William Faulkner, Southern Novelist"...)

His repeated experimentation with the techniques of fiction testifies to an independence of mind and an originality of approach , but it also shows him touching at many points the stream of literary development back of him .

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