spontaneous in Bulgarian
spontaneous in Bulgarian
самопроизво́лен
Self-generated; happening without any apparent external cause.
спонтанен
Done by one's own free choice, or without planning.
непринуден
Proceeding from natural feeling or native tendency without external or conscious constraint.
естествен
Produced without being planted or without human cultivation or labor.
внезапен
Sudden, without warning.