impostor

As a noun impostor

is someone who attempts to deceive by using an assumed name or identity.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between phony and impostor

is that phony is a person who assumes an identity or quality other than their own while impostor is someone who attempts to deceive by using an assumed name or identity.

As an adjective phony

is fraudulent; fake; having a misleading appearance.

As nouns the difference between impostor and traitor

is that impostor is someone who attempts to deceive by using an assumed name or identity while traitor is one who violates his allegiance and betrays his/her country; one guilty of treason; one who, in breach of trust, delivers his country to an enemy, or yields up any fort or place intrusted to his defense, or surrenders an army or body of troops to the enemy, unless when vanquished; also, one who takes arms and levies war against his country; or one who aids an enemy in conquering his country.

As a verb traitor is

to act the traitor toward; to betray; to deceive.

As an adjective traitor is

traitorous.

Impostor is a synonym of rogue.

As a noun impostor

is someone who attempts to deceive by using an assumed name or identity.

As a verb rogue is

.

As nouns the difference between impostor and impactor

is that impostor is someone who attempts to deceive by using an assumed name or identity while impactor is any of several machines or devices in which a part impacts on another, or on a material.

As nouns the difference between impostor and conman

is that impostor is someone who attempts to deceive by using an assumed name or identity while conman is a confidence trickster.

As an adjective suspicious

is arousing suspicion.

As a noun impostor is

someone who attempts to deceive by using an assumed name or identity.

As nouns the difference between impostor and swindler

is that impostor is someone who attempts to deceive by using an assumed name or identity while swindler is a person who swindles, cheats or defrauds.

As nouns the difference between crewmate and impostor

is that crewmate is a member of the same crew while impostor is someone who attempts to deceive by using an assumed name or identity.

As nouns the difference between impostor and cheat

is that impostor is someone who attempts to deceive by using an assumed name or identity while cheat is someone who cheats (informal: cheater).

As a verb cheat is

to violate rules in order to gain advantage from a situation.