ドカン, ドカーン, どかん, どっかん, ドッカーン, どかーん, どっかーん, ドッカンdokan
adverb
Study it in Yanamino
Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences