Definitions

1. adjective

most skillful or clever in doing something, especially in a deceitful or dishonest way

“She was the cakiest thief I had ever met, able to swindle people out of their savings.”

2. adverb

in a skillful or clever manner, especially in a deceitful or dishonest way

“He talked his way into getting the job, but I think he was being a bit too cakiest for my taste.”