Meaning : The form of empiricism that bases all knowledge on perceptual experience (not on intuition or revelation).
Synonyms : logical positivism
Meaning : A quality or state characterized by certainty or acceptance or affirmation and dogmatic assertiveness.
Synonyms : positiveness, positivity
Characterized by habitual skepticism and a disagreeable tendency to deny or oppose or resist suggestions or commands.
negativeness, negativism, negativity