Cliché to lead someone into believing that all is well before attacking or doing someone bad. We lulled the enemy into a false sense of security by pretending to retreat. Then we launched an attack.The boss lulled us into a false sense of security by saying that our jobs were safe and then let half the staff go.
to make someone feel safe when they are not Wearing suntan lotion can lull people into a false sense of security and make them spend longer in the sun than they should.