| rubber-stamp(verb, support, praise, favor, back) |
| run interference for(expression, idiom) |
| sanction(verb, support, encourage, favor, back) |
| stand |
| stand back of(expression, idiom) |
| stay(verb, hold, help, establish, back) |
| stump for(verb, expression, phrasal verb, support, praise) |
| substantiate(verb, hold, help, establish, back) |
| sustain(verb, support, hold, help, praise) |
| swear(verb, support, maintain, secure, approve) |
| take an oath(verb, expression, idiom, approve, uphold) |
| take sides |
| take sides with(expression, idiom) |
| take the part of(verb, expression, idiom, phrasal verb, support) |
| testify(verb, support, maintain, secure, protect) |
| throw in with(verb, expression, idiom, phrasal verb, support) |
| thump for(verb, expression, phrasal verb, support, promote) |
| undersign |
| undertake(verb, approve, uphold, explain, require) |
| verify(verb, hold, help, establish, back) |