1. having or showing a lack of trust; suspicious

Examples

• She became mistrustful of strangers after the incident.
• The dog was mistrustful of anyone wearing a uniform.
• His mistrustful nature made it difficult for him to form close friendships.
• The villagers were mistrustful of the new government policies.
• After being deceived once, she remained mistrustful of his promises.
• The child gave the babysitter a mistrustful look.