[{"Bold_text": "noun", "List Items": ["thorough knowledge or mastery of a thing, subject, etc.", "the state of being familiar ;friendly relationship; close acquaintance; intimacy.", "an absence of ceremony and formality; informality.Synonyms: unconstraint", "freedom of behavior justified only by the closest relationship; undue intimacy.Synonyms: license , freedom , liberty", "Oftenfamiliarities.an instance of such freedom, as in action or speech.", "a sexual liberty or impropriety."]}]