Duplicity

Noun

Definition: Deceitfulness in speech or conduct, typically involving a deliberate intention to deceive.

Synonyms: Deceit, Deception, Dishonesty

Antonyms: Honesty, Sincerity, Truthfulness

Examples:

His duplicity became apparent when he was caught lying about his whereabouts.
The politician was known for his duplicity and double-dealing tactics.

Mnemonics:

Think of "duplicate" which means an exact copy, and duplicity refers to deceit or deception, which can be seen as a copy of the truth.

Etymology:

Origin:

The word "duplicity" originated from the Latin word "duplicis" which means "double" or "two-faced."

Historical Usage:

The word has been used since the late 16th century.

Related Idioms:

Idiom:

"Speak with duplicity"

Explanation:

To speak in a way that is intentionally deceptive or dishonest.

Misconceptions:

Misconception:

Confusing "duplicity" with "duality"

Explanation:

"Duplicity" refers to deceitfulness and intentional deception, while "duality" refers to the quality or state of being dual or having two parts that are usually contrasting or complementary. They have different meanings and connotations.