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

But this time, deliberately introduce one element of spontaneity. —Mark Travers, Forbes.com, 24 Jan. 2026

Other tracks emerged through a mix of spontaneity and what the brothers describe as chaotic creativity. —Jordana Comiter, PEOPLE, 16 Jan. 2026

For a generation that prizes authenticity over perfection, camcorders offer a way to capture emotion and spontaneity without turning the day into a performance. —Sara Radin, Vogue, 13 Jan. 2026

Follow your gut On that note, try to allow yourself some spontaneity. —Olivia Morelli, Condé Nast Traveler, 2 Jan. 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