We found 2 definitions of slack off from 2 different sources.
Verb |
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slack off - become less in amount or intensity; "The storm abated"; "The rain let up after a few hours" | ||
abate, let up, slack, die away | ||
decrease, diminish, lessen, fall decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper" |