Find the odd number / letters / word from the given alternative:

The odd word in the given set is enmity. Friendship, attachment, and intimacy are all positive relationships, while enmity is a negative relationship. Friendship is a relationship of mutual affection between two people. Attachment is a feeling of strong affection or fondness for someone or something. Intimacy is a close, personal, and usually sexual relationship between two people. Enmity is a feeling of hatred or ill will towards someone.