1. Mediocrity, Par, Nothing Special. 2. A backhanded way of telling someone what they did was mediocre. 3. A funny terminology used to passively/aggressively make fun of mediocrity.
"These tacos aren't the worst I've ever had. These tacos are hella decent."

"Yo Brad Bro! That cover of Crazy Town's Butterfly you did last night was hella decent bro!"

X-men first class is hella decent.
by Brotosaurus Rex October 26, 2011
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