If you're suspicious, or uncertain whether you should believe something (or someone), you're distrustful. If your dog is distrustful of clowns, she may growl every time she sees anyone wearing a big, red, rubber nose.

Whenever you experience a lack of trust, you're distrustful. The word adds the prefix dis-, "not," to trustful, or "full of trust." If your cousin frequently tells tale tales, you will probably be distrustful when he claims that he recently met a famous movie star. And if that old wooden roller coaster at the amusement park looks rickety, you might be distrustful of its safety go ride the merry-go-round instead.

Definitions of distrustful

adj having or showing distrust

“a man of distrustful nature”
“"my experience...in other fields of law has made me distrustful of rules of thumb generally"- B.N.Cardozo”
“"vigilant and distrustful superintendence"- Thomas Jefferson”
not disposed or willing to believe; unbelieving
cynical, misanthropic, misanthropical
believing the worst of human nature and motives; having a sneering disbelief in e.g. selflessness of others
doubting, questioning, sceptical, skeptical
marked by or given to doubt
green-eyed, jealous, overjealous
suspicious or unduly suspicious or fearful of being displaced by a rival
leery, mistrustful, suspicious, untrusting, wary
openly distrustful and unwilling to confide
(used of men) having deep-seated distrust of women
unduly suspicious
trustful, trusting
inclined to believe or confide readily; full of trust
disposed to believe on little evidence
willing to entrust personal matters
unsuspecting, unsuspicious
not suspicious
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