Slack

not tense or taut

lacking in rigor or strictness

flowing with little speed as e.g. at the turning of the tide

a stretch of water without current or movement

the quality of being loose (not taut)

a noticeable deterioration in performance or quality

a cord or rope or cable that is hanging loosely

a soft wet area of low-lying land that sinks underfoot

dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve

make less active or fast

cause to heat and crumble by treatment with water

be inattentive to, or neglect

release tension on

become slow or slower

become less in amount or intensity

make less active or intense

avoid responsibilities and work, be idle