In this question, we are given four words: Friendship, Intimacy, Attachment, and Enmity. We need to identify the odd one out.

Looking at the words, we can see that Friendship, Intimacy, and Attachment are all related to positive and close relationships between people. They signify a connection, bond, or closeness.

On the other hand, Enmity stands out as different from the rest. Enmity represents a state of active hostility or animosity between individuals or groups. It is the opposite of friendship and indicates a negative relationship.

Therefore, the correct answer is option 4, Enmity, because it is the only word that does not represent a positive or close relationship between people.