false

The word centers on the concept of a mismatch between appearance (or claim) and reality. It is broader than "wrong," as it often implies an element of deception or artificiality rather than just a simple error.

In factual contexts, it represents a binary opposite to "true." This usage is clinical and neutral, common in logic, mathematics, and legal testimonies where a statement simply does not align with the facts.

When applied to objects or people, it shifts toward a negative connotation of dishonesty. A "false smile" or "false promise" suggests a deliberate attempt to mislead, creating a gap between internal feeling and external expression.

In material terms, it describes things that mimic something else for utility or vanity (like false teeth), where the "falseness" is an accepted functional substitute rather than a malicious lie.