Definition of slackness in English:

slackness

noun

  • See slack

    • ‘They see nothing wrong with slackness and tiefing.’
    • ‘Any slackness on Sunday against Tyrone and we'll be punished severely for it.’
    • ‘Marshall, though, would not escape with slackness again, even if it wasn't quite so slapstick the second time round.’
    • ‘The Bahamas already has a reputation for slackness.’
    • ‘We are putting pressure on ourselves and a bit of slackness seems to have crept into our defending at times.’

Pronunciation

slackness

/ˈslaknəs/