Noun : remarkable acumen in business matters.    From Dictionary.com. 

I have yet to see a more suitable capturing of the absurdity of the U.S. entanglement than Representative Dennis Kucinich's recent acuminous polemic in the Huffington Post, as Kucinich writes in an article beautifully titled "Fake Taliban Leader, Fake Elections, Fake Deadline, Real Trouble".    From Wordnik.com.  [Michael Hughes: Making Afghanistan's Fraudulent Regime Seem 'Barely' Credible] Reference

Brustein's acuminous lens on the cultural and social aspects of Shakespeare's plays in the context of popular perception in Elizabethan and Jacobean England.    From Wordnik.com.  [Yale Press Log] Reference