(adj) marked by practical hardheaded intelligence, Syn. sharp, shrewd, Example:a smart businessman; an astute tenant always reads the small print in a lease; he was too shrewd to go along with them on a road that could lead only to their overthrow
[满腹经纶 / 滿腹經綸, mǎn fù jīng lúnㄇㄢˇ ㄈㄨˋ ㄐㄧㄥ ㄌㄨㄣˊ] full of political wisdom (成语 saw); politically astute; with encyclopedic experience of state policy#86056
[やきがまわる, yakigamawaru] (v5r) to become decrepit; to be in one's dotage; to become dull; to lose one's astuteness; to lose one's touch; to become senile; to lose one's edge; to go downhill