have laziness as one's second nature ; be addicted to a lazy life
由于他懒惰成性，他母亲大为生气。
His mother is rather angry at his laziness.
youdao
不可助长他懒惰成性。
Don't encourage him in his idle ways.
他的懒惰成性和贪婪一定会让他惹上麻烦的。
His laziness and greed will soon make trouble for him.
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