Select the most appropriate synonym of the given word:
DUPLICITOUS

The correct option is Deceitful.

Explanation:

The word DUPLICITOUS refers to someone who is deceitful, treacherous, or double-dealing (acting in two different ways for different people to deceive them).

Let's analyze the given options:

1. Honest: Free of deceit and untruthfulness; sincere (Antonym of Duplicitous).

2. Faithful: Remaining loyal and steadfast (Antonym of Duplicitous).

3. Deceitful: Guilty of or involving deceit; misrepresenting the truth (Synonym of Duplicitous).

4. Loyal: Giving or showing firm and constant support or allegiance to a person or institution (Antonym of Duplicitous).

Therefore, the word closest in meaning (synonym) to DUPLICITOUS is Deceitful.