Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun slacker
1 sense of slacker
Sense 1
slacker, shirker -- (a person who shirks his work or duty (especially one who tries to evade military service in wartime))
=> idler, loafer, do-nothing, layabout, bum -- (person who does no work; "a lazy bum")
Antonyms of adj slack
3 senses of slack
Sense 1
loose, slack -- (not tense or taut; "the old man's skin hung loose and grey"; "slack and wrinkled skin"; "slack sails"; "a slack rope")
INDIRECT (VIA lax) -> tense -- (taut or rigid; stretched tight; "tense piano strings")
Sense 2
slack -- (flowing with little speed as e.g. at the turning of the tide; "slack water")
INDIRECT (VIA standing) -> running -- ((of fluids) moving or issuing in a stream; "as mountain stream with freely running water"; "hovels without running water")
Sense 3
lax, slack -- (lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline")
INDIRECT (VIA negligent) -> diligent -- (characterized by care and perseverance in carrying out tasks; "a diligent detective investigates all clues"; "a diligent search of the files")
Similarity of adj slack
3 senses of slack
Sense 1
loose, slack -- (not tense or taut; "the old man's skin hung loose and grey"; "slack and wrinkled skin"; "slack sails"; "a slack rope")
=> lax (vs. tense) -- (lacking in strength or firmness or resilience; "a lax rope"; "a limp handshake")
Sense 2
slack -- (flowing with little speed as e.g. at the turning of the tide; "slack water")
=> standing (prenominal) (vs. running) -- ((of fluids) not moving or flowing; "mosquitoes breed in standing water")
Sense 3
lax, slack -- (lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline")
=> negligent (vs. diligent) -- (characterized by neglect and undue lack of concern; "negligent parents"; "negligent of detail"; "negligent in his correspondence")
