Definitions

1. verb

to become or make more cunning, crafty, or deceitful

“The politician’s opponent accused him of astuter in his campaign promises.”

2. verb

to become more subtle or skillful in one’s actions or plans

“The experienced thief astuter to evade the security cameras.”

3. noun

a person who is cunning or deceitful

“The police investigated the astuter who had been swindling investors.”