| affirm(verb, promise, guarantee, pledge) |
| assure(verb, promise, guarantee, pledge) |
| attest(verb, promise, guarantee, pledge) |
| aver(verb, promise, guarantee, pledge) |
| bag(verb, encourage, promise, guarantee, pledge) |
| bet on(verb, expression, encourage, promise, assure) |
| brace up(verb, expression, promise, guarantee, pledge) |
| buck up(verb, expression, promise, guarantee, pledge) |
| certify(verb, promise, guarantee, pledge) |
| comfort(verb, encourage, promise, guarantee, pledge) |
| confirm(verb, promise, guarantee, pledge) |
| convince(verb, encourage, promise, guarantee, pledge) |
| declare(verb, promise, guarantee, pledge) |
| encourage(verb, promise, guarantee, pledge, convince) |
| give surety(verb, expression, promise, guarantee, pledge) |
| guarantee(verb, promise, pledge) |
| hearten(verb, encourage, promise, guarantee, pledge) |
| inspire(verb, encourage, promise, guarantee, pledge) |
| persuade(verb, encourage, promise, guarantee, pledge) |
| pledge(verb, promise, guarantee) |