English Reference
noun

familiarity

n.
US /fəˌmɪɫˈjɛɹəti/ UK /fəmˌɪlɪˈæɹɪti/ fa·mil·iar·i·ty UK spelling familiarities

  1. 01 B2 Upper Intermediate

    the state of knowing a subject or a thing well because you have seen or used it many times.

    the state of being well-acquainted with or having a good understanding of something through frequent exposure or study.

    Simple

    His familiarity with the local roads meant he didn't need a map to find the house.

    In context

    The candidate's familiarity with international trade law gave her a significant advantage during the final round of interviews.

    Usage

    Often followed by the preposition 'with'.

    ignoranceunfamiliarity
  2. 02 B2 Upper Intermediate

    a friendly and informal relationship with someone you know very well.

    the state of being close or intimate with another person, characterized by informal behavior.

    Simple

    There was a comfortable familiarity between the two old friends as they sat in silence.

    In context

    The long-standing familiarity between the two negotiators allowed them to bypass formal protocols and reach an agreement quickly.

  3. 03 C1 Advanced Formal

    behavior that is too informal or friendly in a way that seems rude or disrespectful.

    an instance of undue intimacy or inappropriate informality that borders on impertinence.

    Simple

    The boss didn't like the new employee's familiarity and preferred a more professional tone.

    In context

    The clerk's sudden familiarity was taken as a sign of disrespect by the elderly customer, who was used to more formal service.

    Teacher's tip

    This sense is often used in the plural ('familiarities') to describe specific actions that were too casual for the situation.

    boldnesspresumptionimpertinence

The researchers also suggest that younger people's greater familiarity with digital technology may make it easier for them to encounter harmful online material.

ScienceDaily· 15 Aug 2026

There is benefit in Maresca's hire following Guardiola because it provides a sense of familiarity, particularly in the team's identity and their principles.

BBC News· 14 Aug 2026

From Middle French familiarité, from Latin familiāritātem. Displaced native Old English hīwcūþnes. Morphologically familiar + -ity.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated