rogue

An unprincipled, deceitful, and unreliable person; a scoundrel or rascal.

One who is playfully mischievous; a scamp.

A wandering beggar; a vagrant.

A vicious and solitary animal, especially an elephant that has separated itself from its herd.

An organism, especially a plant, that shows an undesirable variation from a standard.

Vicious and solitary. Used of an animal, especially an elephant.

Large, destructive, and anomalous or unpredictable.

Operating outside normal or desirable controls.

To remove (diseased or abnormal specimens) from a group of plants of the same variety.

To remove diseased or abnormal plants.