doubt

–verb (used with object)

1. to be uncertain about; consider questionable or unlikely; hesitate to believe.

2. to distrust.

3. Archaic. to fear; be apprehensive about.

–verb (used without object)

4.to be uncertain about something; be undecided in opinion or belief.

–noun

5. a feeling of uncertainty about the truth, reality, or nature of something.

6. distrust
7. a state of affairs such as to occasion uncertainty.

8. Obsolete. fear; dread.