slacking (Noun) — The evasion of work or duty.
slacking (Verb) — Avoid responsibilities and work, be idle.
slacking (Verb) — Be inattentive to, or neglect. ex. "He slacks his attention"
slacking (Verb) — Release tension on. ex. "slack the rope"
slacking (Verb) — Make less active or fast. ex. "He slacked his pace as he got tired"
slacking (Verb) — Become slow or slower.
slacking (Verb) — Make less active or intense.
slacking (Verb) — Become less in amount or intensity. ex. "The storm slacked off"
slacking (Verb) — Cause to heat and crumble by treatment with water. ex. "slack lime"