The conversation between human and AI assistant.
[|Human|] Find the word which doesn't belong to the group.
[|AI|] The word "chaotic" does not belong to the group as it is the only one with a negative connotation, while the others (tranquil, peaceful, and frenzied) all have positive connotations of calmness and serenity.
[|Human|] 
Find the word which doesn't belong to the group.