The quality of being preachy or moralistic in a way that can be annoying or tedious.

उपदेशात्मकता

English Usage: His constant preachiness made it difficult for others to enjoy their conversations.

Hindi Usage: उसकी लगातार उपदेशात्मकता ने दूसरों के लिए बातचीत का आनंद लेना मुश्किल कर दिया।