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/slæk/ · noun
(uncountable) The part of anything that hangs loose, having no strain upon it..
the slack of a rope or of a sail
take in the slack
Richardson states that a low joint, a short distance from Haslam's Creek Bridge, was, in his opinion, the cause of the accident. […] [He] told Morgan, the Permanent Way Inspector, that there was a "slack" in the road on the Parramatta side of Haslam's Creek Bridge, […] I can positively state […] There was no such slack. The road was in as good running condition as I would wish to see any road. On all lines of course there are slacks, but not slacks of a serious nature; and that there was any such slack or depression in the rails as spoken of by Richardson I positively deny.
a road may be kept up to approximately the same level at all times, and a fair surface maintained by rolling in large patches occasionally, as well as opening slacks in the road when they appear and effecting petty repairs. […] a series of slacks will begin to show in the run of the wheels; or […]
[…] to make good the voids under the sleeper […] to take out "slacks" in the rail level […]
Cauldstane Slap, or rather Slack, is a much frequented pass, through which the periodical droves of black cattle are transported into England.
... for they had at that time observed the side of the brae, where the little green slack was situated, covered with a sheet of flame for a moment.
Then she became a gay grey mare, / And stood in yonder slack; And he became a gilt saddle, / And sat upon her back.
Use slack when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Slack means (uncountable) The part of anything that hangs loose, having no strain upon it..
Common synonyms include slough, slow, moderate, easy.
The opposite depends on the specific sense.
the slack of a rope or of a sail
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