Related Clues:

• Drill instructor's shout
• 'Whoa!'
• Comfortable
• "Slow down"
• "Slow down!"
• Like child's play
• Past tense?
• Opposite of "Ten-hut!"
• Requiring little effort
• "No problemo!"
• Foolproof
• A snap
• 'Calm down ...'
• "Chill out!"
• Elementary