Ichidan/ru-verb

1. to be late; to be delayed; to fall behind schedule; to be overdue (usu. 遅れる)
2. to fall behind (in a race, one's studies, etc.); to lag behind; to be behind (the times) (oft. 後れる)
3. to be bereaved of; to be preceded by (someone) in death (oft. 後れる)
4. to be slow (of a clock or watch)