Who Is the Wicked One?

Who Is the Wicked One?
Proverbs 11:11-13 (ESV)
[11] By the blessing of the upright a city is exalted, but by the mouth of the wicked it is overthrown.
[12] Whoever belittles his neighbor lacks sense, but a man of understanding remains silent.
[13] Whoever goes about slandering reveals secrets, but he who is trustworthy in spirit keeps a thing covered.

Sometimes we get bent out of shape by the actions of a neighbor (brother). Instead of addressing it properly we end up as the one behaving wickedly by belittling and slandering. The result: our city (home/church/family) is overthrown.