rogue

A scoundrel, rascal or unprincipled, deceitful, and unreliable person.

And meet time it was, when yon usher, vinegar-faced rogue that he is, began to inquire what popish trangam you were wearing […]

He had told more lies in his time, and undergone more baseness of stratagem in order to stave off a small debt, or to swindle a poor creditor, than would have sufficed to make a fortune for a braver rogue.

A mischievous scamp.

Ah, you sweet little rogue, you!

A vagrant.

Malware that deceitfully presents itself as antispyware.

An entry in the Microsoft Malware Protection Center's Threat Research & Response Blog shows that rogue AV, also known as scareware, is ruling the malware roost, as 6 top of the 10 malicious programs removed by the MSRT (Malicious Software Removal Tool) in the US in October were 'rogues'.

Next, click the "Installed on" heading in the Windows 7 uninstaller to sort the list by date, and see if any programs have the same date and time stamps as your rogues.

An aggressive animal separate from the herd, especially an elephant.

If he is a rogue, and there's any truth to territoriality at all, we got a good chance of spotting him between Cape Scott and South Beach.

Vicious and solitary.

Mosquito. One lone rogue mosquito.

Large, destructive and unpredictable.

Deceitful, unprincipled.

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.

Mischievous, unpredictable.

Even without hovering drones, a lurking assassin, a thumping score and a denouement, the real-life story of Edward Snowden, a rogue spy on the run, could be straight out of the cinema. But, as with Hollywood, the subplots and exotic locations may distract from the real message: America’s discomfort and its foes’ glee.

To cull; to destroy plants not meeting a required standard, especially when saving seed, rogue or unwanted plants are removed before pollination.

2000 Carol Deppe, Breed Your Own Vegetable Varieties, Totnes: Chelsea Green Pub. Maintaining varieties also requires selection, however. It's usually referred to as culling or roguing. ...we examine the [plant] population and eliminate the occasional rogue.

Our skill as roguers was being tested. After we had rogued a field the field was inspected and the potatoes classified Stock Seed, A, B or H. In those days, between Stock seed and Class A, there was £2 per ton of potatoes difference.

To cheat.

And then to think that Mark should have rogued me of five shiners! He was clever—that's a fact.

To give the name or designation of rogue to; to decry.

he Atheists may endeavour to rogue and ridicule all incorporeal Substance

To wander; to play the vagabond; to play knavish tricks.

if hee be but once so taken idlely roguing