1. (

• astute ,
• sharp ,
• shrewd

) marked by practical hardheaded intelligence; "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" ;

2. (

• calculating ,
• calculative ,
• conniving ,
• scheming ,
• shrewd

) acting with a specific goal; "the most calculating and selfish men in the community" ;