clandestine russian

• та́йный

  secret, clandestine, covert

  mysterious, hidden

• подпо́лье

  underground, underground movement, clandestine activity

  cellar, basement, crawl space

• я́вка

  attendance, appearance, presence

  turnout

  secret meeting, safe house, clandestine meeting place

• закули́сный

  behind-the-scenes, secret, covert, clandestine

  backstage, behind the scenes

• законспири́ровавший

  underground, clandestine, who has gone underground

• тайнобра́чный

  cryptogamous, cryptogamic

  clandestinely married, relating to a secret union

Examples

• Его подозрева́ли в уча́стии в подпо́льном движе́нии.

  He was suspected of being active in a clandestine movement.

• Законспирированная организация действовала много лет.

  The clandestine organization operated for many years.