goof-proof
1. verb To make something difficult to ruin or spoil. With all the mishaps so far, I see that you guys didn't exactly goof-proof this plan, huh?
2. adjective Describing something that has been made difficult to ruin or spoil. With all the mishaps so far, I see that your brilliant plan isn't exactly goof-proof, huh?
3. adjective Describing something that is difficult to misuse or make a mistake with. Clear nail polish is goof-proof—I don't trust myself to paint my own nails with anything else!