| be apprehensive of(verb, dispute, challenge, doubt, question) |
| be curious(verb, dispute, challenge, doubt, question) |
| be diffident |
| be in a quandary(verb, dispute, challenge, doubt, question) |
| be possessive |
| be puzzled(verb, dispute, challenge, doubt, question) |
| be skeptical |
| be undetermined(verb, dispute, challenge, doubt, question) |
| believe(verb, consider, assume, think, doubt) |
| bewilderment(noun, trouble, concern, anxiety, confusion) |
| blink at(expression, reject, disregard, ignore, neglect) |
| botheration(noun, trouble, worry, concern, anxiety) |
| brush off(expression, reject, disregard, ignore, neglect) |
| burden(noun, worry, strain, anxiety, fear) |
| butterflies(noun, trouble, worry, concern, anxiety) |
| cageyness |
| call into question(expression, idiom, oppose, doubt, suspect) |
| cast doubt on(verb, expression, idiom, phrasal verb, doubt) |
| cast doubt upon(verb, expression, idiom, oppose, doubt) |
| changeableness(noun, trouble, concern, anxiety, weakness) |