a. 不信任的, 深疑的

[ adj ]
openly distrustful and unwilling to confide
<adj.all>

Mistrustful \Mis*trust"ful\, a.
Having or causing mistrust, suspicions, or forebodings.

Their light blown out in some mistrustful wood. --Shak.
※ -- {Mis*trust"ful*ly}, adv. --
{Mis*trust"ful*ness}, n.