| Calm |
| Vouch |
| Cinch |
| Pledge |
| Sew up |
| Confirm |
| Promise |
| Hearten |
| ___ ice |
| Warrant |
| Convince |
| Encourage |
| Vouch for |
| Guarantee |
| Make safe |
| Make calm |
| Nail down |
| Underwrite |
| Say it's so |
| Allay fears |
| Allay worry |
| Make certain |
| Make confident |
| Quell concerns |
| Give one's word |
| Make inevitable |
| Free from doubt |
| Make certain of |
| State positively |
| Say "buck up" to |
| Give a guarantee |
| Remove all doubt |
| State confidently |
| Allay one's fears |
| Allay the fears of |
| Relieve of anxiety |
| Give one's backing |
| Give one's word to |
| Calm the nerves of |
| Give confidence to |
| Promise confidently |
| State confidently to |
| Dispel the doubts of |
| Make free from doubt |
| Tell with confidence |
| Leave no doubt about |
| State with confidence |
| Instill confidence in |
| Set one's mind at rest |
| Stevie Wonder lyric "You can rest your mind ___ that I'll be loving you always |