Panic means sudden uncontrollable fear or anxiety, often causing really unthinking behavior. When you panic it causes alarms to go up making you aware of danger. You get anxious, worried, a feeling of dread comes over you, and you become filled with apprehensions. I love synonyms because adding them to our dialog brings greater understanding of our thoughts regarding our insights. Some synonyms for panic are, alarm, anxiety, dread, terror, hysteria, dismay, and apprehension to name a few.