This is the 3522nd most frequent Dutch word.
onzorgvuldig
Careless or negligent.
Here, 'onzorgvuldig' functions as an adverb, describing the manner in which 'handelde' (acted) was performed.
Hij handelde onzorgvuldig bij het invullen van het formulier.
He acted carelessly when filling out the form.
Here, 'onzorgvuldig' describes 'chauffeur' as an adjective, indicating the driver was acting without due care.
De onzorgvuldige chauffeur veroorzaakte een ongeluk.
The careless driver caused an accident.
In this case, 'onsorgvuldigheid' is a noun derived from 'onzorgvuldig,' referring to the general quality of being careless.