Top Definition
1: Hard on that is hard enough to fracture rocks or pelvises
2: To be inherently hard in personality
3: Difficult to deal with
1: "Dan's frackstiffy just about killed me last night." "I've got a frackstiffy that would make Mt. Everest jealous."

2: "My boss is a frackstiffy kinda person."

3: "The girl can be frackstiffy at times."
by Tienette February 04, 2010
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