Abstruse (adj)abstruseness (n)
*difficult To UnderstandTax Forms Can Be So A...
Acumen (n)
*quickness Of Insight Or JudgementMost Of You...
Ascertain (v)ascertainable (adj)
*to Discover With Certainty, Especially By Ex...
Cerebral (adj)cerebrum (n)
*relating To The Brain*using Your IntellectMa...