Ｗる

ダブる, だぶるdaburu

godan verb · intransitive

1. to be duplicated
2. to be repeated
3. to overlap
4. to fall together (of dates, etc.)
5. to coincide
6. to repeat (a failed course, school year, etc.)
7. to make a double play
8. to make a double fault (in tennis)

Study it in Yanamino