1. the time by which something must be finished, submitted, etc. 2. (formerly) a boundary around a military prison beyond which a prisoner could not venture without risk of being shot by the guards.
While it's important to talk with your doctor about the cause of your slurred speech, slurred speech caused by anxiety is not dangerous. It's not a sign that you have something else coming, or that your brain will somehow be inefficient for handling life tasks in the future.
Muscle Tension Anxiety also causes significant muscle tension. Muscle tension can make it harder to move mouth muscles, which of course is the main cause of slurred speech in most other conditions. Over-Awareness An interesting problem with anxiety is the way it makes you over-aware of what would otherwise be subconscious/automatic behaviors.