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

All of this, the trio says, was a combination of diligent preparation on Jay’s orders and the spontaneity of bringing in guests across the evenings, including Eminem, Rihanna, Beyoncé and Blue Ivy Carter. — Steven J. Horowitz, Variety, 20 July 2026

In the end, the concert succeeded on its spontaneity, and Twain looked genuinely happy to be at the Horseshoe, going deep into the new songs that clearly mean so much to her. — Karen Bliss, Rolling Stone, 18 July 2026

But since the pandemic, there’s been even more focus on fan spontaneity and unity. — Patrik Jonsson, Christian Science Monitor, 18 July 2026

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

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