JMdict: 1315800

もちあがる 【もちあがる】

1. [v5r,vi] to be lifted; to be raised; to rise; to go up
2. [v5r,vi] to happen suddenly; to occur; to come up; to turn up
3. [v5r,vi] to be homeroom teacher for the same class multiple years in a row; to move up with one's class

Words often seen with this one: (experimental feature)

桑 (10)