testify against

Also found in: Idioms.
See: betray, inform
References in classic literature ?
By the slave code, they are adjudged to be as incompetent to testify against a white man, as though they were indeed a part of the brute creation.
Lawyer Myra Janina Banaga, Villegas' counsel, said the DOJ had accepted her client's offer to testify against Dumlao and Sta.
That was what moved Herbert Colanggo to testify against Sen.
Aguirre, 'using his power as DOJ Secretary and administrative supervisor of the BuCor, gave special prison privileges to the same criminal convicts he used to testify against complainant at the House inquiry, in a clear case of graft and corruption,' De Lima said in her complaint.
'Ito ay maliwanag na panggigipit sa mga mag tetestigo laban kay Duterte (This is a clear harassment on those who testify against Duterte),' Trillanes said in a statement after Justice Secretary Vitaliano Aguirre II ordered the National Bureau of Investigation (NBI) to locate Lascanas.
The feisty rookie senator, who has been detained in Camp Crame since February on what she claimed were trumped up drug charges, had questioned Marcelino's supposed plan to testify against her.
But De Lima questioned Marcelino's motives for wanting to testify against her.
The Department of Justice (DOJ) said they also have six other witnesses to testify against the senator.
She accused the president and his men of ordering the stabbing and of torturing the inmates to force them to testify against her.
'The fact is it is Duterte and his cohorts who ordered the stabbing and also the torture of inmates who refused to testify against me,' De Lima said.
'Or was it just a simple case of a state-sanctioned assassination and EJK (extrajudicial killing), albeit frustrated, of a high profile inmate who initially refused to testify against me, but who decided to sing like a bird after he is almost killed by fellow inmates-turned-state-assassins?' she asked.
Ronnie Dayan, the alleged bagman of Senator Leila de Lima, is set to testify against his former boss and lover at the reopening of the probe on the proliferation of drugs in the New BIlibid Prison on Thursday.