anonymous
Meaning: being unknown, unrecognized
Usage: Mary received a love poem from an anonymous admirer.
alias
Meaning: a false name or identity
Usage: He snuck past the guards by using an alias and fake ID.
pretense
Meaning: an appearance or action intended to deceive
Usage: Though he actually wanted to use his parents’ car to go on a date, Nick borrowed his parents’ car under the pretense of attending a group study session.
legerdemain
Meaning: deception, slight-of-hand
Usage: Smuggling the French plants through customs by claiming that they were fake was a remarkable bit of legerdemain.
beguile
Meaning: to trick, deceive
Usage: The thief beguiled his partners into surrendering all of their money to him.