Adjective:
случаен, епизодичен, импровизиран, божествен, чудотворен, от провидението, небесен, внезапен, рязък, небрежен, пъргав, неочакван.
...or ACCIDENTAL ingestion of chrysanthemum blossoms.
And it's been weeks since I took that ACCIDENTAL sip of Red Bull.
Every year, 15,000 fires are caused by ACCIDENTAL dryer-lint ignition.