Glossophobia or speech anxiety is the fear of public speaking. The word "glossophobia" derives from the Greek γλῶσσα "sosa", meaning tongue, and φόβος "phobos", fear or dread. Speech is the action of speaking out loud and anxiety is the feeling of worry, tension or concern that manifests when thinking that negative things will occur, and physically by increased blood pressure, sweating and shaking. Thus, speech anxiety is the feeling of worry and physical reactions caused when speaking to others, specially to larger groups.