It can be caused by either excessive tear production, insufficient tear drainage, or a combination of both. Epiphora can be acute or chronic, most likely everyone has experienced at some point the tearing and irritation that results whenever something gets into our eyes.
Assertive is defined as someone who is self-confident and strong willed, though sometimes domineering or pushy. An example of someone who may be assertive is a car salesman. The definition of assertive is something with a strong taste or smell. An example of a something with an assertive smell is an aged blue cheese.
Assertive communication is direct and respectful. Being assertive gives you the best chance of successfully delivering your message. If you communicate in a way that's too passive or too aggressive, your message may get lost because people are too busy reacting to your delivery.