fifth column

Etymology
From a 1936 radio address by Spanish Nationalist general, in which he spoke of four of his army columns moving on Madrid and a consisting of his militant supporters within the capital, intent on undermining the Republican government from within.

Noun

 * 1) A group of people which clandestinely undermines a larger group, such as a nation, to which it is expected to be loyal.

Translations

 * Arabic: الطَّابُورُ الخَامِس
 * Armenian:
 * Belarusian: пя́тая кало́на
 * Bulgarian: пе́та коло́на
 * Catalan: cinquena columna, quinta columna
 * Chinese:
 * Mandarin:
 * Czech:, vnitřní nepřítel
 * Dutch: vijfde colonne
 * Finnish:
 * French:
 * Georgian: მეხუთე კოლონა
 * German: Fünfte Kolonne
 * Greek: πέμπτη φάλαγγα
 * Japanese: 第五列, 第5列
 * Kazakh: бесінші лек
 * Macedonian: петта колона
 * Persian: ستون پنجم
 * Polish:
 * Portuguese: quinta coluna
 * Russian:
 * Spanish:
 * Swedish:
 * Ukrainian: п'я́та коло́на