Synonyms of spontaneity

1 Syllable
will, whim
3 Syllables
impulsion, heedlessness, unrestraint, energies, ad-libbing, energy, wantonness, impulse, impulsions, excitant, sprightliness, tendency, abandon, actuation, abandons
4 Syllables
supinity, facility, inclination, facilities, easygoingness, naturalness, autoschediasm
5 Syllables
improvisation, improvisations, informality
6 Syllables
extemporization
7 Syllables
overfamiliarity