Related Clues:

• Born yesterday, so to speak
• Jejune
• Ingenuous
• The father who knows best
• Calves, e.g.
• Easily duped
• Like a babe in the woods
• Immature
• Unsuspecting
• Like a lamb
• Unworldly
• Unfledged
• Foolable
• IN ONE'S SALAD DAYS
• Dewy-eyed