Someone who has never achieved anything (in a particular field); one who has had an unsuccessful career
A scoundrel, rascal or unprincipled, deceitful, and unreliable person.
A vagrant.
A plant that shows some undesirable variation.
A character class focusing on stealthy conduct.
An aggressive animal separate from the herd, especially an elephant.
Deceitful software pretending to be anti-spyware, but in fact being malicious software itself.
A mischievous scamp.
To cull; to destroy plants not meeting a required standard, especially when saving seed, rogue or unwanted plants are removed before pollination.
Mischievous, unpredictable.
Large, destructive and unpredictable.
Deceitful, unprincipled.
Vicious and solitary.