slack off

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slack off

1. To release or ease the tension or pressure (on something). I'll need to slack off a bit so that I can adjust the rigging. Make sure you don't slack off on those harnesses before we've come to a complete stop.
2. To reduce or decrease over time. Most of the businesses on the island close up for the year once the summer business starts to slack off toward the end of August. The winds began slacking off as the hurricane shifted course out to sea.
3. To be or become lazy; to procrastinate or avoid work or one's duty. If you keep slacking off, we'll be forced to give you a formal warning. I should have been working on my essay, but I decided to slack off for the weekend with my friends.
See also: off, slack
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

slack off

 
1. to taper off; to reduce gradually. Business tends to slack off during the winter months. The storms begin to slack off in April.
2. [for someone] to become lazy or inefficient. Near the end of the school year, Sally began to slack off, and her grades showed it. John got fired for slacking off during the busy season.
See also: off, slack
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

slack off

Decrease in activity or intensity, as in If business ever slacks off we can go on vacation, or When the project fell behind schedule again, she thought we were slacking off. [Second half of 1800s]
See also: off, slack
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

slack off

v.
1. To decrease in activity or intensity: Tourism on Cape Cod usually slacks off around September.
2. To evade work; shirk: High school seniors tend to slack off once they get accepted to college.
See also: off, slack
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
The Rock Of Ages star loved getting the opportunity to start dancing again for her role in the musical but admitted she slacks off when she is not working.
And anyone who slacks off in training is quickly found out thanks to Lennon's high-tech approach.
But the Championship is a tough league and I can see Bellamy getting frustrated - he is a full-on lad who trains hard, speaks his mind and won't tolerate anyone who slacks off. So if things aren't going hunky dory, expect fireworks in Cardiff.
PAUL IFILL says his Millwall team-mates are told to give boss Dennis Wise a piece of their mind if he slacks off during games.
The fetal hemoglobin gene usually slacks off within the first six months of life, and individuals switch over to making the adult form of hemoglobin.
CSABA LASZLO will hammer any Hearts player who slacks off against Celtic this afternoon - but insists all the title pressure is on Rangers anyway.