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небрежная работа stresses
gen.	bungle; slap-dash work; once-over-fightly; once over fightly; sloppy workmanship (dejure_az); sloppy work (Andrey Truhachev)
Makarov.	a careless piece of work; a perfunctory piece of work; a slipshod piece of work; careless piece of work; perfunctory piece of work; slapdash work; slipshod piece of work
O&G	nigger-rigging (Yeldar Azanbayev)
небрежная неаккуратная, плохо выполненная работа
gen.	a careless piece of work

небрежная работа: 15 phrases in 4 subjects

Construction	1
General	3
Idiomatic	1
Makarov	10