schlampig
sloppy
Describes a person, place, or thing that is untidy, unkempt, or dirty.
Sein Schreibtisch ist immer total schlampig.
His desk is always completely sloppy.

sloppy / careless
Loading your saved state.
sloppy
Describes a person, place, or thing that is untidy, unkempt, or dirty.
Sein Schreibtisch ist immer total schlampig.
His desk is always completely sloppy.

'Schlampig' (sloppy/careless) can also be used as an adverb to describe how an action is carried out. It then answers the question 'How?'.
Er hat das Formular sehr schlampig ausgefüllt.
He filled out the form very carelessly.
The word 'schlampig' (sloppy/careless) is often used in colloquial speech and can sound slightly derogatory, especially when it describes a person.
Nenn mich nicht schlampig, nur weil mein Zimmer unordentlich ist!
Don't call me sloppy just because my room is messy!
When 'schlampig' (sloppy) describes a person, their appearance, or a place, it means 'unordentlich' (untidy) or 'ungepflegt' (unkempt).
Seine schlampige Kleidung machte keinen guten Eindruck.
His sloppy clothing did not make a good impression.
When 'schlampig' (careless) describes work, a task, or an action, it means 'nachlässig' (careless) or 'ungenau' (inaccurate).
Eine schlampige Planung führte zu großen Problemen im Projekt.
Careless planning led to major problems in the project.
exact / precise
'genau' and 'schlampig' are opposites when it comes to work or an action. 'genau' means that someone works carefully and watches out for mistakes. 'schlampig' means that someone works carelessly and overlooks important details. 'genau' sounds neutral or positive, while 'schlampig' is clearly negative. When a task is important, for example a form, an invoice, or a repair, 'genau' is desirable and 'schlampig' is problematic.

Der Bericht war schlampig geschrieben und enthielt mehrere falsche Daten.
The report was written carelessly and contained several incorrect dates.
Vor der Reise prüfen wir die Buchungsnummern noch einmal genau.
Before the trip, we check the booking numbers carefully one more time.