Synonyms of spontaneously
- 2 Syllables
- freely, ad-lib
- 3 Syllables
- instanter, impromptu, artlessly, instantly
- 4 Syllables
- informally, optionally, naturally, unconsciously
- 5 Syllables
- voluntarily, immediately, instantaneously, unreservedly, impulsively, unaffectedly, unpretentiously
- 6 Syllables
- automatically, extemporaneously
- 7 Syllables
- characteristically