| A | B |
|---|
| apprehensive | anxious or fearful about the future |
| categorical | without exception; absolute |
| conclusive | decisive; putting to an end of doubt |
| dubious | doubtful; uncertain; questionable about the quality or validity |
| indeterminate | not capable of being determined or estabilished |
| precarious | dangerous; risky |
| qualm | sense of doubt |
| tentative | uncertain; not fully worked out; provisional |
| unequivocal | perfectly clear |
| vacillate | to swing indecisively from one opinion or idea to another |
