Meaning of sixth column | Babel Free

Definitions

1. An additional group, beyond an identified fifth column, of people which clandestinely undermines a larger group, such as a nation, to which it is expected to be loyal.
2. Used other than figuratively or idiomatically: see sixth, column.

Examples

“If the Government is talking about suppressing a Fifth Column, why raise a Sixth Column?”

“True, we have people of the fifth column, and, unfortunately, the sixth column, with us; they have them in every country; but so far in this war the British diplomatic and secret service has not been so successful as that clever, astute brute-man Hitler and his agents.”

CEFR level