psychopathic
adjective/ˌsaɪkəˈpæθɪk/
Frequency rank: #14,386 most common English word
Meaning
relating to or characteristic of a person with a mental disorder involving persistent antisocial behavior, lack of empathy, and absence of remorse.

Example sentence
The detective realized he was dealing with psychopathic behavior when the suspect showed no remorse for his actions.
Synonyms & related words
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