spontaneity

noun

spon·​ta·​ne·​i·​ty ˌspän-tə-ˈnē-ə-tē  -ˈnā- 

1

: the quality or state of being spontaneous

2

: voluntary or undetermined action or movement

also : its source

Synonyms of spontaneity

• abandon
• naturalness
• abandonment
• enthusiasm

Examples of spontaneity in a Sentence

the spontaneity of their behavior

the couple sacrificed some of the spontaneity in their lives when they both got nine-to-five jobs

Recent Examples on the Web

Inevitably, given the show’s spontaneity, things occasionally went wrong. —K.j. Yossman, Variety, 30 May 2026

Elsewhere, the autopsy claims that Harris’ campaign didn’t sufficiently incorporate polling data into its messaging, as if her operation suffered from a surfeit of authenticity and spontaneity. —Michelle Goldberg, Mercury News, 29 May 2026

Embrace spontaneity and clarity. —Charles Trepany, USA Today, 28 May 2026

For example, the science fiction film genre often depicts a world that could be altered by time and advances in technology, whereas the musical film genre is full of songs and dances, spontaneity, exuberance, and romantic love. —Tham Thi Nguyen, Encyclopedia Britannica, 26 May 2026

Word History

Etymology

borrowed from New Latin spontāneitāt-, spontāneitās, from Late Latin spontāneus "voluntary, unconstrained, spontaneous" + Latin -itāt-, -itās -ity

First Known Use

1651, in the meaning defined at sense 1

Rhymes for spontaneity

• contemporaneity
• heterogeneity
• inhomogeneity
• deity
• homogeneity
• simultaneity

Kids Definition

spontaneity

noun

spon·​ta·​ne·​ity

ˌspänt-ən-ˈē-ət-ē, 

ˌspänt-ᵊn-, 

-ˈā-ət-

: the quality or state of being spontaneous