funambulism
noun
fu·nam·bu·lism fyu̇-ˈnam-byə-ˌli-zəm 
1
: tightrope walking
2
: a show especially of mental agility
funambulist
fyu̇-ˈnam-byə-list
noun 
Did you know?
Back in ancient Rome, tightrope walking was a popular spectacle at public gatherings. The Latin word for "tightrope walker" is funambulus, from Latin funis, meaning "rope," and ambulare, "to walk." Over time, this fancy word for an impressive act of physical skill and agility also came to mean an impressive act of mental skill or agility.
Word History
Etymology
Latin funambulus ropewalker, from funis rope + ambulare to walk
First Known Use
1801, in the meaning defined at sense 1