Synonyms for Familiarity:

n.

understanding, friendliness, lore, consciousness, sensitivity, expertise, information. vulgarity, comprehension, presumption, awareness, sass, cognition, mastery. comradeship, chumminess, love. insolence, nerve, attitude, pertness, nerviness, overconfidence, audaciousness, rudeness, boldness, assumption, forwardness, impudence, brass, incivility, sauce, sassiness, effrontery, uppishness, disrespect, sauciness, uppityness, courtesy, gall, brashness, cheek, Impudency, discourtesy, presumptuousness, pushiness, audacity, brazenness, impertinence, cheekiness, face, chutzpah, crust. familiarity (noun)
friendliness, ease, impudence, comprehension, forwardness, understanding, pushiness, presumption, chumminess, mastery, boldness, disrespect, impertinence, informality, awareness.
friendliness (noun)
ease, boldness, presumption, forwardness, informality.
friendship (noun)
chumminess.
good manners (noun)
courtesy.
habit (noun)
rut, treadmill, custom, way of life, habit, disposition, regularity, routine, wont, second nature, trait, mannerism, daily grind, fixed ways, conventionality, leaning, addiction, temperament, tradition, instinct, acclimation, tendency.
informality (noun)
informality, rudeness, ease, presumptuousness.
knowledge (noun)
lore.
knowledgeableness (noun)
cognition, understanding, awareness, comprehension.
uppishness (noun)
uppishness.
uppityness (noun)
uppityness.

Other synonyms:

lore, cheekiness, comradeship, uppityness, chutzpah, presumptuousness, expertise, overconfidence, awareness, nerviness, mastery, brazenness, incivility, consciousness, pushiness, uppishness, chumminess, cognition, sassiness, sauciness, Impudency. information, sensitivity, vulgarity, brashness, impudence, audaciousness, discourtesy, presumption, cheek, sass, forwardness, effrontery, rudeness, understanding. gall, ease, disrespect, audacity, boldness, sauce, insolence, brass, nerve, crust, impertinence, pertness. assumption. face. casualness
informality.
Other relevant words:
pushiness, nerve, nerviness, ease, incivility, boldness, understanding, cheek, mastery, insolence, audaciousness, face, forwardness, rudeness, effrontery, expertise, impertinence, crust, sauce, disrespect, presumptuousness, pertness, gall, overconfidence, impudence, audacity, discourtesy, comradeship, vulgarity, brazenness, brashness, chumminess, courtesy, sassiness, informality, information, uppityness, cognition, awareness, friendliness, assumption, uppishness, comprehension, brass, chutzpah, consciousness, presumption, cheekiness, Impudency, sauciness.

Usage examples for Familiarity

  1. He thought, too, that this might be her way of showing her resentment of the familiarity that he had taken in calling her by her name. – The Bondboy by George W. (George Washington) Ogden
  2. His easy familiarity of pose offended her. – The Tides of Barnegat by F. Hopkinson Smith
  3. If events correspond there is a sense of familiarity and we feel that we are moving with the movement of events. – Public Opinion by Walter Lippmann