schwierige

In a sentence

• Das war eine schwierige Entscheidung, die er treffen musste.

  That was a difficult decision he had to make.

  Here, 'schwierige' is used as an adjective to describe the noun 'Entscheidung' (decision), emphasizing the challenging nature of it.

• Die Aufgabe, an der sie arbeitet, ist wirklich schwierig.

  The task she's working on is really difficult.

  In this sentence, 'schwierig' is part of a predicate, describing the noun 'Aufgabe' (task) and characterizing it as difficult.

• Wir stehen vor einer schwierigen Situation, die überlegt behandelt werden muss.

  We are facing a difficult situation that needs to be thoughtfully handled.

  Here, 'schwierigen' is used as an attributive adjective in its declined form to agree with the feminine accusative noun 'Situation', specifying its complexity.