Adj- Shady; what the situation becomes when someone has taken too much speed Speed; unsafe; unreliable; not trustworthy

Noun-Sketchball- A person who has taken too much Extacy who cannot make safe decisions and is no longer reliable or trustworthy; A shady character
New York alleys at night are so sketchy.

There is no way in hell I'm going to give my new Mercades to that sketchball.

The wooden rollercoaster at the theme park in Colorado was really sketchy.
by lastchance1291 March 25, 2006
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An adjective used to describe anything questionable or foreign in relation to one's comfort zone. Commonly used by teenagers in a-town to describe other people they find shady. Not to be confused with sketch, the form of the word used by many teens in McLean.
The dark alley was most sketchy.
by lorlila March 22, 2005
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Acting in a manner that is erratic, unpredictable, or untrustworthy; accompanied by paranoia, nervousness, and fidgeting - usually associated with meth users.
"Jeez, that guy was sketchy. I bet he hasn't slept in days"
by Ryjin June 19, 2005
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a word that is used way too much on rob dyrdeks fantesy factory
dude that looks sketchy
by tizzle dogg December 16, 2010
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a feeling of total nervousness or discomfort, while taking part in a risky situation.
"Sean Randall got sketchy on us when we were getting drunk"
by j kobes July 8, 2006
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I'd stay away from that guy, he looks sketchy.
by Rawar July 13, 2005
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A riff on the archaic definition of sketch:

1. A hasty or undetailed drawing or painting often made as a preliminary study.

An outline, where not all of the elements are completely clear or known; can refer to a person, place, object or experience; frequently refers to a shady element, something hidden and potentially dangerous; often refers to being up too long on speed and the loss of clarity that comes with sleep deprivation
Are you sure you want to give your car keys to Patrick, he seems a little sketchy.

Gurl, I was fine on day three, but day four was a little sketchy.

Angel is full-on sketchy; she would steal the teeth out of your grandmother’s mouth if she thought she wouldn’t get caught.
by Pop Tart January 13, 2005
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