past form and past participle
Spoke in court or an official investigation about what was known, usually after promising to tell the truth.
The witness testified in court.
She has testified against her former employer.
American English
How to pronounce testified
verbB2Common word
TEHStuhfaid
/ˈtʰɛs.təˌfaɪd̚/
3 syllables · Stress the first syllable.
Form of testify
Testified is used as both the past form and the past participle of testify.
Spoke in court or an official investigation about what was known, usually after promising to tell the truth.
Practice out loudMeanings & examples
past form and past participle
Stated formally that something was true, based on what was known or experienced.
Several doctors testified that the treatment was effective.
Her long career has testified to her dedication.
past form and past participle
Showed clearly that something was true or that something had happened.
The ruins testified to the city's long history.
The damage has testified to the storm's power.
Useful expressions
to give evidence after promising to tell the truth
The witness testified under oath.
to give evidence that may harm someone in a legal case
He agreed to testify against the suspect.
to give evidence in support of someone
Several colleagues testified on her behalf.
Related words & forms
The y changes to i before -es and -ed: testifies, testified. Before -ing, keep the y: testifying.