Synonyms of slackness

Noun

1. inanition, lassitude, lethargy, slackness, weakness

usage: weakness characterized by a lack of vitality or energy

2. slack, slackness, looseness, play

usage: the quality of being loose (not taut); "he hadn't counted on the slackness of the rope"

3. laxness, laxity, remissness, slackness, negligence, neglect, neglectfulness

usage: the quality of being lax and neglectful