Look up this word
In a sentence
Na otázku odpovedala spontánne.
She answered the question spontaneously.
Celú úlohu dokončil spontánne.
He completed the whole task spontaneously.
O zmene hovorili spontánne na porade.
They spoke about the change spontaneously at the meeting.
Keď prišiel čas konať, zareagovali spontánne.
When it was time to act, they reacted spontaneously.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.