Crossword Heaven

Answer: IDIOTPROOF

IDIOTPROOF is a crossword puzzle answer that we have spotted 11 times.

• Extremely simple
• Not at all like rocket science
• Easy-to-use
• *Simple-to-use
• Pretty darn simple
• Really easy to use
• Impossible to mess up
• Impossible to screw up
• Un-screw-up-able
• Designed for the lowest common denominator, say
• Really hard to mess up