| skepticism(noun, trouble, concern, delay, difficulty) |
| disquiet(noun, trouble, worry, concern, strain) |
| question(noun, difficulty, issue, doubt, subject) |
| distress(noun, trouble, worry, concern, anxiety) |
| dubiety(noun, trouble, concern, delay, difficulty) |
| reservation(noun, feeling, anxiety, certain, doubt) |
| wariness(noun, doubt, uncertainty, impression, guess) |
| care(noun, trouble, worry, concern, anxiety) |
| discomfort(noun, upset, worry, concern, anxiety) |
| misdoubt(noun, doubt, fear, distrust, suspicion) |
| presentiment(noun, feeling, worry, concern, sign) |
| solicitude(noun, trouble, worry, concern, anxiety) |
| unbelief(noun, anxiety, doubt, fear, scruple) |
| unease(noun, trouble, worry, concern, distress) |
| angst(noun, upset, trouble, worry, concern) |
| cynicism(noun, doubt, uncertainty, impression, guess) |
| diffidence(noun, difficulty, anxiety, confusion, doubt) |
| disbelief(noun, upset, difficulty, anxiety, confusion) |
| doubtfulness(noun, trouble, concern, anxiety, confusion) |
| dubiousness(noun, difficulty, anxiety, confusion, doubt) |