This is the 3522nd most frequent Dutch word.
onzorgvuldig
Careless or negligent.
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.
Zijn werk werd afgekeurd vanwege zijn onzorgvuldigheid.
His work was rejected due to his carelessness.
Here, 'onzorgvuldig' functions as an adverb, describing the manner in which 'handelde' (acted) was performed.