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

The crowds ignored the best efforts of the protest leaders to act as disciplinary conductors and reveled in their own playful spontaneity, their slogans and posters heaping colorful profanities on the prime minister. — Asim Ali, Time, 1 Aug. 2026

His first two features were loose, low-budget films starring himself and made by messing around with friends; they were built on spontaneity and the belief that a movie reveals itself in the edit. — Nicholas Quah, Vulture, 29 July 2026

Their air of slightly absurd quasi-spontaneity is nicely amplified by the jittery yet unobtrusive rhythms of the direction and Yost’s editing. — Dennis Harvey, Variety, 28 July 2026

The same with Skywalker — her spontaneity and her energy and life on camera and her ability to play while still being technically proficient and talented and is a real wonder. — Rick Porter, HollywoodReporter, 25 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