1
2
as in flexible
not bound by rigid standards
slack supervision on the project
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3
as in loosened
not tightly fastened, tied, or stretched
left the ropes slack
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1
2
as in slackness
the extent to which something hangs or dips below a straight line
take up the slack of a rope
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3
as in pants
slacks plural
an outer garment covering each leg separately from waist to ankle
she prefers wearing slacks instead of a dress
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as in to loosen
to make less taut
the skipper ordered the crew to slack off the sheets on the mainsail
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Merriam-Webster unabridged
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