The word "unobserved" is an adjective. It means that something or someone is not seen or noticed by anyone. If something happens unobserved, it happens without anyone watching or paying attention.
Basic Example: "The cat sneaked out of the house unobserved."
More Complex Example: "He managed to slip away unobserved during the meeting."
In more advanced contexts, "unobserved" can be used to discuss situations in science, psychology, or literature where something is studied or referred to without the subject being aware.
While "unobserved" does not have direct idioms or phrasal verbs associated with it, you might find related expressions like: - "Under the radar": This means something is done in a way that it is not noticed or recognized. - "Slip through the cracks": This means something is missed or overlooked, often unintentionally.
"Unobserved" is a useful word to describe actions or events that happen without anyone seeing them.