Psychologist (noun)

  1. A person who is trained in psychology and is skilled in the study of the mind and behavior.
  2. A professional who specializes in the study of the mind, brain, and behavior.
  3. A person who practices psychology, the scientific study of human behavior and mental processes.

Origin:

From psychology + -ist.

Examples:

  1. He is a clinical psychologist.
  2. She is a developmental psychologist.
  3. The psychologist helped the patient to understand their behavior.
  4. The psychologist's report was important in the trial.
  5. The psychologist's advice was very useful.
Some random words: foreground, contrail, connotative