Definition of slackness:
inattention, phlegm, flatness, falloff, omission, default, listlessness, heedlessness, lethargy, neglect, slump, quag, slack water, inanition, lassitude, indifference, slight, inadvertence, thoughtlessness, scorn, oversight, slack, falling off, failure, drop-off, quagmire, negligence, disrespect, careful, languor, carelessness, remissness, mire, neglectfulness, morass, sluggishness, disregard.
And the bitterest of his trials must have been the agony of anxiety in which he must have lived lest some error in judgment on his part, some slackness in measuring the exact credulity of his audience, should cause his exposure and lead to his being cast out of the camp as an impostor and hunted to death as a false prophet: a fate which more than once nearly overtook him.- "The Emancipation of Massachusetts", Brooks Adams.
- "Doctor Cupid", Rhoda Broughton.
A Canadian governor- general, then, had to deal with British Cabinets which alternated between foolish rigour and foolish slackness, and with politicians who reflected little on the responsibilities of empire, when they flung before careless British audiences irresponsible discussions on colonial independence- as if it were an academic subject and not a critical issue.- "British Supremacy & Canadian Self-Government 1839-1854", J. L. Morison.