familiarity

noun

fa·​mil·​iar·​i·​ty fə-ˌmi-lē-ˈ(y)er-ə-tē 

-ˈ(y)a-rə-;

-ˌmil-ˈyer-,

-ˌmil-ˈya-rə-

plural familiarities

1

a

: the quality or state of being familiar

b

: a state of close relationship : intimacy

2

a

: absence of ceremony : informality

b

: an unduly informal act or expression : impropriety

c

: a sexual liberty

3

: close acquaintance with something

Synonyms

• intimacy
• belonging
• kinship

Examples of familiarity in a Sentence

He spoke to everyone with the easy familiarity of an old friend.

the elderly couple enjoys a familiarity that is the result of many years of happy marriage

Recent Examples on the Web

The chaplains had had difficulty finding a standard prayerbook that would match the varied needs and backgrounds of their congregants, most of whom have little knowledge of or familiarity with Jewish practice. —Marla Brown Fogelman, Sun Sentinel, 12 Aug. 2025

The actors have familiarity with the material and the stage settings and directions are read by a narrator. —Pam Kragen, San Diego Union-Tribune, 12 Aug. 2025

Visualization, breath control and scenario planning create a calm familiarity with pressure. —Aslak De Silva, Forbes.com, 8 Aug. 2025

Bridging animation and live action, daily life in New York and the complexities of being home in Casablanca, Bouchra is laced with pathos and familiarity, suffused with the political nuances of inhabiting multiple cultures. —Christian Zilko, IndieWire, 7 Aug. 2025

Word History

First Known Use

13th century, in the meaning defined at sense 1a

Rhymes for familiarity

• angularity
• bipolarity
• capillarity
• cellularity
• circularity
• granularity
• insincerity
• insularity
• modularity
• osmolarity
• popularity
• regularity

Kids Definition

familiarity

noun

fa·​mil·​iar·​i·​ty fə-ˌmil-ˈyar-ət-ē 

-ˌmil-ē-ˈar-

plural familiarities

1

: close friendship : intimacy

2

: lack of formality : freedom and ease in personal relations

3

: close acquaintance with or knowledge of something

4

: an overly bold act or expression