Dictionary Definition

rogue n : a deceitful and unreliable scoundrel [syn: knave, rascal, rapscallion, scalawag, scallywag, varlet]

User Contributed Dictionary

A scoundrel, rascal or unprincipled, deceitful, and unreliable person.
A mischievous scamp.
A vagrant.
Deceitful software pretending to be anti-spyware, but in fact being malicious software itself.
An aggressive animal separate from the herd, especially an elephant.
A plant that shows some undesirable variation.
An entity set apart from the normal order, which acts in an independent manner. This can apply to individuals, states, or other entities.

a scoundrel, rascal or unprincipled, deceitful, and unreliable person

a mischievous scamp

a vagrant

deceitful software pretending to be anti-spyware, but in fact being malicious software itself

an aggressive animal separate from the herd, especially an elephant

a plant that shows some undesirable variation

an entity set apart from the normal order, which acts in an independent manner

In the context of "of an animal, especially an elephant": Vicious and solitary.
In the context of "by extension": Large, destructive and unpredictable.
- 2004: Chris Wallace, Character: Profiles in Presidential Courage
  
  In the minds of Republican hard-liners, the "Silent Majority" of Americans who had elected the President, and even Nixon's two Democrat predecessors, China was a gigantic nuke-wielding rogue state prepared to overrun the free world at any moment.
Operating outside of normal controls.

Rogue may refer to:

In jargon:

Volunteer (botany), a plant that is of a different type from the rest of the crop
Rogue elephant, in zoology
Rogue planet, in astronomy
Rogue software, in computer security
Rogue state, in geopolitics
Rogue trader, in finance
Rogue wave, in oceanography

In proper names:

In brand names:

Rogue (automobile), two-door hardtops and convertibles made by American Motors (AMC)
Rogue (magazine), a men's magazine published in the 1950s and 1960s
Rogue Ales, a microbrewery in Newport, Oregon
Rogue Entertainment, a software company
Rogue Pictures, an American movie studio
Rogue Wave (company)
Moog Rogue, an analog synthesizer from the 1980s
Nissan Rogue, a car by Nissan Motors

In popular culture:

In video games:

Rogue (character class) or Thief, in role-playing games
Rogue (Dungeons & Dragons) or thief, a base character class in Dungeons & Dragons
Rogue (World of Warcraft), a class in World of Warcraft
Rogue (computer game), a 1980 dungeon-crawling computer game
Rogue, a job class in Ragnarok Online
Rogue, a person who will not work in SimCity Societies
Rogue, a playable character class in the Diablo video game series
Rogue, the first job character for a thief in MapleStory
Rogue Galaxy, a role-playing game for the Playstation 2 featuring a title hero, Jaster Rogue
Babylon Rogues, a group of avian thieves in Sonic the Hedgehog
GoldenEye: Rogue Agent, a James Bond video game published by Electronic Arts
Star Wars: Rogue Squadron, a Nintendo 64 video game