suddenly alert

Examples (10)

• He was suddenly alert to the danger.
• The quiet forest was suddenly alert with the sound of a distant siren.
• She became suddenly alert when she heard footsteps behind her.
• The guards were suddenly alert to the intruder's presence.
• As soon as the alarm sounded, everyone was suddenly alert.
• The dog was suddenly alert to a noise outside.
• He felt suddenly alert and ready to face the challenge.
• The entire team went from relaxed to suddenly alert when the deadline was moved up.
• The child, who had been playing, became suddenly alert at the sight of a butterfly.
• The sudden change in temperature made the hikers suddenly alert to the need for warmer clothing.