noun, noun or participle which takes 'suru', intransitive verb, na-adjective, noun which may take the genitive case particle 'no'
oversleeping; sleeping in late
Refers to the act of sleeping past the intended time, often resulting in being late. Commonly used as a noun or with する to mean 'to oversleep'.
今朝寝坊して、学校に遅刻した。
I overslept this morning and was late for school.
寝坊しない
I set an alarm so I wouldn't oversleep.
noun
late riser; sleepyhead
Refers to a person who habitually sleeps in or is a late riser. Often used in a light, teasing manner.
彼は大の寝坊で、休日はいつも昼まで寝ている。
He's a real sleepyhead and always sleeps until noon on his days off.