Related Clues:

• Part of a Beatles refrain
• 'Right on!'
• First sign
• OK
• 'Let's do it!'
• Encouraging word
• 'Amen!'
• First
• Primary
• 'You got that right!'
• 'You bet'
• Informal affirmative
• Word of agreement
• 'You betcha'
• Opposite of 41-Down