shrewd   
avanavana
sharp, keen, clear-headed, skillful, clever, shrewd, quick. [Richardson 1885]
fatsaka
skillful, shrewd, cunning. See fetsy. [Richardson 1885]
fentifenty
sharp, skillful, quick, expert, shrewd. See kinga. [Richardson 1885]
fenty
sharp, skillful, quick, expert, shrewd. See kinga. [Richardson 1885]
fetsy
cunning, skillful, shrewd, sharp. [Richardson 1885]
kinga
clever, quick, shrewd [Hallanger 1973]
lalin-tsaina
deep, profound, sagacious, shrewd, sensible. Lalin-kevitra is also used [Richardson 1885]