Definitions

1. noun

a person or thing that is shifty or untrustworthy

“The police suspected him of being involved in a shady business, a known nickery in the area.”

2. noun

a trick or artifice, especially a clever or cunning one

“The magician’s nickery was impressive, but we couldn’t figure out how he did it.”

3. verb

to trick or deceive, often by using clever or cunning means

“She was nickering her friends into giving her their passwords.”