| A | B |
| Apprehensive | anxious or fearful about the future |
| Categorical | without exception or qualification |
| Conclusive | serving to put an end to doubt |
| Dubious | doubtful; uncertain |
| Indeterminate | not capable of being determined or decided |
| Inevitable | incapable of being avoided or prevented |
| Precarious | dangerously lacking in security or stability |
| Qualm | a sensation of doubt or miss giving |
| Unequivocal | leaving no doubt or misunderstanding |
| Vacillate | to waver indecisively between one course of action or opinion and another |