doubt
/ˈdau̇t/
verb
to call into question the truth of : to be uncertain or in doubt about
to lack confidence in : distrust
to consider unlikely
He doubts everyone's word.
noun
a lack of confidence : distrust
an inclination not to believe or accept
uncertainty of belief or opinion that often interferes with decision-making
has doubts about his abilities
a claim met with doubt
uncertainty doubt dubiety skepticism suspicion mistrust mean lack of sureness about someone or something. uncertainty may range from a falling short of certainty to an almost complete lack of conviction or knowledge especially about an outcome or result. doubt suggests both uncertainty and inability to make a decision.
noun
a lack of faith in oneself : a feeling of doubt or uncertainty about one's abilities, actions, etc.
plagued with/by self-doubt