Chaotic neutral is freedom from both society's restrictions and a do-gooder's zeal. In 4th edition mechanics for Dungeons & Dragons chaotic neutral is found under the umbrella of the unaligned alignment.
A chaotic neutral character follows his whims. He is an individualist first and last. He values his own liberty but does not strive to protect the freedom of others. He avoids authority, resents restrictions, and challenges traditions. A chaotic neutral character doesn't intentionally disrupt organizations as part of a campaign of anarchy. To do so, he would have to be motivated either by good (and a desire to liberate others) or by evil (and a desire to make others suffer). A chaotic neutral character may be unpredictable, but his behavior is not totally random. He is not as likely to jump off a bridge as to cross it.
A wandering rogue who lives both by work for hire and petty theft is an example of a chaotic neutral character.
A chaotic neutral character dislikes laws and regards them as restrictions to his or her freedom. Lawful neutral characters are obsessed with guidelines and restrictions, and follow these codes to the letter. These two alignments are opposites.
Some of the characters identified as chaotic neutral in the Forgotten Realms setting include: