This is the 9855th most frequent Portuguese word.
desconfiado
Distrustful or suspicious.
Here, 'desconfiado' is used as an adjective to describe someone's feeling of distrust or suspicion toward another person's motives.
Ele estava desconfiado das intenções do vendedor.
He was suspicious of the seller's intentions.
In this example, 'desconfiada' modifies the subject 'Ela' to express her reaction to a potentially unusual or alarming situation.
Ela ficou desconfiada ao ver a porta aberta.
She became suspicious upon seeing the open door.
This usage of 'desconfiado' highlights the cautious and mistrusting behavior of the dog towards unfamiliar people.