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

As a growing portion of Gen Zers burn out on dating apps, a new crop of ventures and events are trying to bring back offline spontaneity, from matchmaking photobooths, to singles mixers and revivals of Victorian-era acquaintance cards. — Rachel Hale, USA Today, 3 Sep. 2026

Why bother for spontaneity when two people are doing the exact same thing at the same time? — Bilge Ebiri, Vulture, 3 Sep. 2026

The campaign mirrors the collection’s overarching theme for spontaneity. — Angela Velasquez, Footwear News, 1 Sep. 2026

Clarke pursued authenticity ingeniously, using tiny, hidden radio microphones that transmitted to tape recorder from afar, in order to capture dialogue with maximal spontaneity. — Richard Brody, New Yorker, 26 Aug. 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