Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “testify”

testify

verb    /ˈtes·təˌfɑɪ/
to speak seriously about something, esp. to tell what you know about a case in a court of law after you have officially promised to tell the truth: [I] Elizabeth testified before a grand jury. [+ that clause] One witness testified that she saw the thief running away.
(Definition of testify verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of testify

Browse related topics

You are looking at an entry to do with Court cases, orders & decisions, but you might be interested in these topics from the Trials and court cases topic area:

Definitions of “testify” in other dictionaries

Word of the Day

generous

willing to give money, help, kindness, etc., especially more than is usual or expected

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More