Related Clues:

• "Yoo-hoo!" while waving (2 words)
• Possible answer to “Where are you?”
• Words said with a wave
• Pick up in conversation what GIs were in WW2
• 'Psst! Hey you!'
• "Where are you?" response, perhaps
• 'Where are you?' response, perhaps
• Words from behind a door, maybe
• Reportedly eavesdrop in this direction
• Response to "Where are you?"
• Hider's revelation
• 'Psst! This way!'
• Arm-waver's shout with "Hey" (2 words)
• Beckoning cry
• 'Psst' follower