- doubt, uncertainty, incertitude, dubiety, doubtfulness, dubiousness - the state of being unsure of something
--1 is a kind of cognitive state, state of mind
--1 has particulars:mental reservation, reservation, arriere pensee; misgiving, mistrust, distrust, suspicion; incredulity, disbelief, skepticism, mental rejection; indecision, indecisiveness, irresolution; suspense