An urban derivative of sneaky, but more commonly used when secret missions are on the plan.
Also associated is the snealy look, a look of supreme sneakiness with undertones of smugness and arousal. This has been adopted in favour over a handshake.
A common typo that occurs when someone is so excited about engaging in 'sneaky' activities, that when trying to explain their devious behaviours, their finger slips when attempting to hit the K button and press the L button instead, which is located directly beside it on a standard qwerty keyboard.
Jamie: 'Kristi, how did you manage to smoke an entire bowl of crack in front of the police station without getting caught??'
Kristi: 'It was simple! I pretended that I was having an asthma attack and disguised my crack pipe to make it look like an inhaler. I'm so snealy!'
A peculiar olive colored frog like creature which walks with a gangly stride and subsists on food that it finds in the garbage. They are extremely rare because many think them to be extremely ugly and in 1993 United States President Bill Clinton passed the Snelly Extermination act in which gun license laws were lifted for a 6th month period in an effort to rid the country of the creature.