* The spy agency conducted a covert operation to gather intelligence on the enemy. (meaning: secret and hidden)
* The journalist uncovered a covert plan to rig the election. (meaning: secret and illegal)
* He made a covert glance at the woman sitting across from him. (meaning: secretive and hidden)
* The government denied any involvement in the covert bombing campaign. (meaning: secret and unauthorized)
* She sent him a covert message, hoping no one else would notice. (meaning: hidden and discreet)