Laziness
Idleness, Sloth
noun, な adjective
A lazy, lazy person is plagued with never ending laziness. They spend their days in idleness, totally afflicted with sloth.
怠惰 is a formal word you'll most likely see in writing. It describes someone who habitually avoids effort or responsibility, so it speaks to a person's character or general attitude rather than a single instance of laziness.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
どうすれば怠惰を克服できるのでしょうか。
What do you think you can do to conquer your laziness?