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

Keep it light, and let spontaneity work in your favor while staying confident in your presence. —Tarot.com, Hartford Courant, 3 May 2026

New Agers believed that anything was possible if people tapped into their inner spontaneity and joy for living. —Literary Hub, 29 Apr. 2026

Orange and yellow are optimistic, uplifting, energetic colors that inspire confidence, creativity, and spontaneity. —Sophie Flaxman, Better Homes & Gardens, 28 Apr. 2026

While there was room for spontaneity, structure remained essential — especially given the technical demands of sketch comedy. —Virginia Chamlee, PEOPLE, 27 Apr. 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