Did you possibly mishear "introvert"? com/dictionary/american/introvert
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AH020387I guess it can be spelt both extrovert and extravert?Yes, most dictionaries seem to list "extravert" as a variant spelling.
AH020387Also do both 'introvert' and 'extrovert' and even their noun forms (introversion & extroversion) describe someone who is an extremist in those qualities or someone who is moderate?