The Czech term "istivý, vychytralý" matches the English term "acute"

other czech words that include "istivý" : english :
istivý, vychytralý astute
istivý, vychytralý shrewd
other czech words that include "vychytralý" : english :
istivý, vychytralý astute
istivý, vychytralý shrewd