The watch upon their ports was slackly kept and ships constantly left them.
Vacations lose their value when you study as slackly as Louie did.
The dog-eared Latin grammar and arithmetic primer were odious to him, 289 and he learned but slackly.
The Governor and Cardinal, with their forces, kept Edinburgh, for they were slackly pursued.
My chief anxiety is lest the Academy-product-sale-Commission of the State carry on its office-trade too slackly.
As soon as Ernestine had mounted the seat the slackly held gathering showed signs of cohesion.
A slackly rolled turban covered half his forehead, and he leaned with his back against a cottonwood scowling upon his judge.
Dick, who had been gripping the chair hard, let his hand fall slackly and turned away.
In any case, these judgments were but slackly enforced, even in those instances where enforcement was within Edward's power.
The slackly gathered reins were held in the left hand, while from the right wrist dangled a thick stock whip.
Old English slæc "remiss, lax, characterized by lack of energy, sluggish, indolent, languid; slow, gentle, easy," from Proto-Germanic *slakas (cf. Old Saxon slak, Old Norse slakr, Old High German slah "slack," Middle Dutch lac "fault, lack"), from PIE root *(s)leg- "to be slack" (see lax).
Sense of "not tight" (in reference to things) is first recorded c.1300. As an adverb from late 14c. Slack-key (1975) translates Hawaiian ki ho'alu. Slack water (n.) "time when tide is not flowing" is from 1769. Slack-handed "remiss" is from 1670s. Slack-baked "baked imperfectly, half-baked" is from 1823; figuratively from 1840.
early 14c., "cessation" (of pain, grief, etc.), from slack (adj.). Meaning "a cessation of flow in a current or tide" is from 1756; that of "still stretch of a river" is from 1825. Meaning "loose part or end" (of a rope, sail, etc.) is from 1794; hence figurative senses in take up the slack (1930 figuratively) and slang cut (someone) some slack (1968). Meaning "quiet period, lull" is from 1851. Slacks "loose trousers" first recorded 1824, originally military.
"coal dust," mid-15c., sleck, of uncertain origin, probably related to Middle Dutch slacke, Middle Low German slecke "slag, small pieces left after coal is screened," perhaps related to slagge "splinter flying off metal when it is struck" (see slag (n.)).
1510s, "to moderate, make slack," back-formed from slack (adj.) after the original verb veered into the specialized sense of slake. Meaning "be remiss, inactive or idle, fail to exert oneself" is attested from 1540s; current use is probably a re-coining from c.1904 (see slacker, and cf. Old English slacful "lazy," sleacmodnes "laziness"). Related: Slacked; slacking.
A period of inertness or decreased activity: He'd pulled his weight long enough to get some slack/ a channel surfer trapped in his own den of slack (1851+)
: Witness the 40,000 or so Americans here now, a lot of them teaching English or just slacking, drinking 50-cent beers in the pubs, grooving to acid jazz at the Roxy