noun
A straightforward noun for a person who habitually avoids work or effort. Can be used teasingly or as mild criticism.
弟は怠け者で、いつも宿題を後回しにする。
My younger brother is a lazy person and always puts off his homework.
彼は怠け者だから、朝早く起きられない。
He's a lazybones, so he can't get up early in the morning.