testify against

testify against someone or something

to be a witness against someone or something. Who will testify against him in court? I cannot testify against the company I work for.

Name	Pronounced	Usage
Wenonah	wə-NON-ə	English (Rare)
Dee	DEE	English
Reneer	rə-NAYR	Limburgish
Jacoba	yah-KO-bah	Dutch
Jared	JER-əd (English), JAR-əd (English)	English, Biblical
Vanessa	[və'nesə]