| knock(verb, examine, challenge, seek, investigate) |
| make inquiry(verb, expression, examine, challenge, seek) |
| misdoubt(verb, dispute, challenge, doubt, question) |
| misgive(verb, dispute, challenge, doubt, question) |
| pose(verb, present, cause, create, put) |
| question mark(expression, idiom) |
| roast(verb, examine, challenge, demand, request) |
| scruple(noun, verb, trouble, concern, dispute) |
| smell a rat(expression, idiom, dispute, challenge, doubt) |
| summon(verb, get, dispute, provoke, try) |
| test(noun, verb, get, dispute, provoke) |
| want(noun, verb, provoke, demand, request) |
| accost(verb, get, go, promote, dispute) |
| appeal(noun, verb, request) |
| arouse(verb, get, dispute, provoke, try) |
| ascertain |
| ask for(expression, get, dispute, provoke, try) |
| assert(verb, get, dispute, provoke, demand) |
| be apprehensive of(verb, dispute, challenge, doubt, question) |
| be in a quandary(verb, dispute, challenge, doubt, question) |