The word "suspicious" describes a feeling or attitude of uncertainty or doubt about someone or something. When you are suspicious, you may think that something is wrong, dishonest, or not as it seems. It's often linked to a lack of trust in people, situations, or information.
The word "suspicious" originates from the Latin word "suspiciosus," which means "full of suspicion." This itself comes from "suspicio," meaning "to look up at" or "to suspect." The formation reflects a sense of looking at something with doubt or questioning its validity.