take the Fifth
- refuse to answer a question and exercising a right to remain silent
Wiktionary
verb
Etymology: A reference to the Fifth Amendment to the United States Constitution, which, among other provisions (e.g., prohibition of double jeopardy), protects individuals from being compelled to testify against themselves (i.e., self-incrimination).
- To decline to comment, especially on grounds that it might be incriminating.
“If you ask me who ate the last of the ice cream, I will simply take the fifth.”
““Do you believe the violence on January 6 was justified morally?” she asked. Flynn squinted, truculent. “Take the Fifth,” he said.”