| half believe |
| harbor suspicions |
| hardship(noun, worry, strain, anxiety, burden) |
| hassle(noun, worry, strain, anxiety, burden) |
| have doubt(verb, expression, hold, consider, assume) |
| have misgivings(verb, expression, idiom) |
| have one's doubts(verb, expression, idiom, certain, unbelief doubt) |
| have qualms(verb, expression, dispute, challenge, doubt) |
| have reservations about(verb, expression, idiom, phrasal verb, doubt) |
| heat(noun, worry, strain, anxiety, burden) |
| heebie-jeebies(noun, trouble, worry, concern, anxiety) |
| hemming and hawing(noun, expression, idiom, delay, weakness) |
| hesitate(verb, oppose, dispute, challenge, doubt) |
| idea(noun, doubt, uncertainty, impression, guess) |
| impatience(noun, worry, strain, anxiety, burden) |
| impeach(verb, oppose, dispute, doubt, question) |
| impugn(verb, oppose, dispute, challenge, doubt) |
| inconclusiveness(noun, trouble, concern, anxiety, confusion) |
| indecision(noun, trouble, concern, delay, difficulty) |
| indecisiveness(noun, delay, weakness, doubt, uncertainty) |