Top Definition
Adjective used to describe an activity that is a complete waste of time and energy. Typically refers to long reports or other school related activities.
Example 1:
Guy 1: Did you go to baseball practice last night?
Guy 2: Hell no, practice is siliskit.

Example 2: I don't want to do this siliskit report on Beowulf.
by psychobobtb April 15, 2009
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