2 occurrences

'Slack' in the Bible

And repayeth them that hate him to their face, to destroy them: he will not be slack to him that hateth him, he will repay him to his face.

When thou shalt vow a vow unto the LORD thy God, thou shalt not slack to pay it: for the LORD thy God will surely require it of thee; and it would be sin in thee.

Bible Theasaurus

Reverse Interlinear

Strong's
Root Form
Definition
Usage
אחר 
'achar 
Usage: 16

פּוּג 
Puwg 
Usage: 4

רמיּה 
R@miyah 
Usage: 15

רפה 
Raphah 
feeble , fail , weaken , go , alone , idle , stay , slack , faint , forsake , abated , cease ,
Usage: 46

βραδύνω 
Braduno 
tarry , be slack
Usage: 2

βραδύτης 
Bradutes 
Usage: 1

King James Version Public Domain