Great.
Enjoyable.
That cracks; that produces a sharp sound as of something splitting or breaking.
The formation of cracks on a surface.
The thermal decomposition of a substance, especially that of crude petroleum in order to produce petrol / gasoline.
The production of a crack sound.
Very, usually associated with praise.
better than average, better than usual; wonderful.
Of excellent quality, superfine.
Very; extremely (used like the prefix super-).