rogue

Short definition from Wiktionary

Noun

1. 1
   A scoundrel, rascal or unprincipled, deceitful, and unreliable person.
2. 2
   A mischievous scamp.
3. 3
   A vagrant.
4. 4
   Malware that deceitfully presents itself as antispyware.
5. 5
   An aggressive animal separate from the herd, especially an elephant.
6. 6
   A plant that shows some undesirable variation.
7. 7
   A character class focusing on stealthy conduct.

Adjective

1. 1
   Vicious and solitary.
2. 2
   Large, destructive and unpredictable.
3. 3
   Deceitful, unprincipled.
4. 4
   Mischievous, unpredictable.

Verb

1. 1
   To cull; to destroy plants not meeting a required standard, especially when saving seed, rogue or unwanted plants are removed before pollination.
2. 2
   To cheat.
3. 3
   To give the name or designation of rogue to; to decry.
4. 4
   To wander; to play the vagabond; to play knavish tricks.

Proper noun

1. 1
   A surname.