Slack not the pressage.
Dryden.
3. To deprive of cohesion by combining chemically with water; to slake;
as, to slack lime.
4. To cause to become less eager; to repress; to make slow or less
rapid; to retard; as, to slacken pursuit; to slacken industry. "Rancor
for to slack." Chaucer.
I should be grieved, young prince, to think my presence Unbent your
thoughts, and slackened 'em to arms.
Addison.
In this business of growing rich, poor men should slack their pace.
South.
With such delay Well plased, they slack their course.
Milton.