difficult
US /ˈdɪf.ə.kəlt/
UK /ˈdɪf.ə.kəlt/

1.
difícil, complicado
needing much effort or skill to accomplish, deal with, or understand.
:
•
The exam questions were very difficult.
Las preguntas del examen eran muy difíciles.
•
It's a difficult decision to make.
Es una decisión difícil de tomar.
2.
problemático, complicado
full of problems; problematic.
:
•
They are going through a very difficult period.
Están pasando por un período muy difícil.
•
He has a difficult personality.
Tiene una personalidad difícil.