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.
Likewise, slurred speech may be a side effect of some medications if they cause muscle relaxation or slowed thinking. Extreme tiredness may also have a similar effect. Heart Attack. Heart attacks can sometimes induce slurred speech, alongside crushing chest pain, tiredness, shortness of breath, dizziness and confusion.