hipness

From hip +‎ -ness.

hipness (usually uncountable, plural hipnesses)

1. The characteristic of being hip; coolness; trendiness.
   • 1973, Emilio Castillo, Stephen "Doc" Kupka, David Garibaldi, “What Is Hip?”, in Tower of Power, performed by Tower of Power:

     Hipness is what it is, / And sometimes hipness is what it ain't