Here is what you do; you post a word that others have to guess the definition for. You have to find the definition of the word posted above you, too. The definition can't be out of the dictionary; you have to summarize what you already know. If you have never heard the word before, then you have 1 minute to look in the dictionary for it. This is an Honour Code type of thing; we aren't at your house to tell you that your minute is up. All we can do is trust you to follow the rules.
I will start;
Interminable