ばったり

ばったり, バッタリ, ばたり, バタリ, ばったん, バッタンbattari

adverb

1. with a clash
2. with a thud
3. with a bang
4. with a flop
5. unexpectedly (meeting someone)
6. suddenly (ending)
7. abruptly (coming to a halt)

Study it in Yanamino