Fear
… cases of fear (terror) a freeze or paralysis response is possible. Some psychologists such as John B. Watson, Robert Plutchik, and Paul Ekman have suggested that fear belongs to a small set of basic or innate emotions. This set also includes such emotions as joy, sadness, and anger. Fear should be distinguished from the related emotional state of anxiety, which typically occurs without any certain or immediate external threat.
Synonyms of fear
verb: be afraid, dread, apprehend, …