mistrusted his neighbors
mistrust
/ˌmis-ˈtrəst/
noun
a lack of confidence : distrust
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.
verb
to have no trust or confidence in : suspect
to doubt the truth, validity, or effectiveness of
surmise