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• Slack / Slacker (Brittanica.com)

Main Entry: ¹ slack
Pronunciation: 'slak
Function: adjective
Etymology: Middle English slak, from Old English sleac; akin to Old High German slah slack, Latin laxus slack, loose, languEre to languish, Greek lagnos lustful and perhaps to Greek lEgein to stop
Date: before 12th century
1 : not using due diligence, care, or dispatch : NEGLIGENT
2 a : characterized by slowness, sluggishness, or lack of energy <a slack pace> b : moderate in some quality; especially : moderately warm <a slack oven> c : blowing or flowing at low speed <the tide was slack>
3 a : not tight or taut <a slack rope> b : lacking in usual or normal firmness and steadiness : WEAK <slack muscles> <slack supervision>
4 : wanting in activity : DULL <a slack market>
5 : slacking in completeness, finish, or perfection <a very slack piece of work>
synonym see NEGLIGENT
- slack·ly adverb
- slack·ness noun

Main Entry: slack·er
Pronunciation: 'sla-k&r
Function: noun ( onthaasten )
Date: 1898
: a person who shirks work or obligation ......................Lees verder...