松懈

HSK 7-9

sōngxiè

to slacken; to become lax; to let down one's guard

不能松懈

bùnéng sōngxiè

One must not slack off

工作一松懈就出错

gōngzuò yī sōngxiè jiù chūcuò

Work becomes sloppy when one relaxes

松懈下来

sōngxiè xiàlái

To become relaxed