Savvy

sav·​vy /ˈsævi/

adjective

shrewd, astute

“Anybody who says they are a good liar obviously is not, because any legitimately savvy liar would always insist they're honest about everything."

- Chuck Klosterman (1972 - )

noun

know-how

“There is a difference between having access to information and having the savvy it takes to interpret it."

- Clifford Stoll (1950 -)

verb

to understand (slang)

“When I want any scouting done before daylight I'll take care of it myself, savvy?"

- Hopalong Cassidy (1911) by Clarence E. Mulford (1883 - 1956)