| Guard |
| Cinch |
| Pledge |
| Clinch |
| Secure |
| Sew up |
| Confirm |
| Protect |
| Lock up |
| Guarantee |
| Make safe |
| Nail down |
| Ascertain |
| Safeguard |
| See to it |
| Check again |
| Make certain |
| See run (anag) |
| Leave no doubt |
| Make certain of |
| Remove all doubt |
| Co-sign, as a loan |
| Double-check, e.g. |
| Not leave to chance |
| Make certain (that) |
| Leave no doubt about |
| Nutrition drink brand |
| Nutrition shake brand |
| Remove any doubt about |
| Nutritional drink brand |
| Nutritional supplement brand |
| Brand name drink in the nutrition aisle |
| Make certain, as that by drinking a shake an adult will get all their essential nutrients |