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

Finally, slides should support the speaker with rich media, and genuine practice, not rigid rehearsal, allows for spontaneity and authenticity, ultimately boosting personal and career visibility. — William Arruda, Forbes.com, 7 July 2026

An early career launched without shortcuts, with small roles in TV series and B movies until his major success as the star of the series ER, formed an actor who is able to inhabit the screen with disarming spontaneity. — Andreas Wiseman, Deadline, 6 July 2026

Adnan and Swiss curator, Hans Ulrich Obrist, discuss the value of epiphany and spontaneity in poetry, as well as memory in relation to architecture. — Literary Hub, 6 July 2026

The instant and unexpected success of Season 1, which aired as Season 2 was being shot, led to a loss of that spontaneity and, eventually, to the MTV series ending after Season 3. — Chris O'Falt, IndieWire, 2 July 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