lastigste
Lastigste is the superlative form of the Dutch adjective lastig, meaning most difficult or most burdensome. It is used to describe the highest degree of difficulty within a defined set, typically with the definite article: de lastigste taak, het lastigste probleem. The form can modify a noun (“de lastigste taak”) or function predicatively (“De taak is de lastigste”).
Morphology and related forms: The base adjective lastig forms the comparative as lastiger and the superlative
Usage notes: In ordinary Dutch, de lastigste/het lastigste is widely used for concrete items and abstract concepts
Examples: Dit is de lastigste puzzel uit de set. Het lastigste gedeelte van het project is de
Etymology and related terms: lastig derives from Dutch roots related to burden or load; the -ig suffix