Pronunciation: (dout),[key] —v.t. 1. to be uncertain about; consider questionable or unlikely; hesitate to believe.
2. to distrust.
3. Archaic.to fear; be apprehensive about.
—v.i. to be uncertain about something; be undecided in opinion or belief.
—n. 1. a feeling of uncertainty about the truth, reality, or nature of something.
3. a state of affairs such as to occasion uncertainty.
4. Obs.fear; dread.
5. beyond the shadow of a doubt, with certainty; definitely. Also,beyond a doubt,beyond doubt. 6. in doubt, in a state of uncertainty or suspense: His appointment to the position is still in doubt. 7. no doubt, a. probably.
b. certainly: There is no doubt an element of truth in what you say. 8. without doubt, unquestionably; certainly.