thorny
US /ˈθɔːr.ni/
UK /ˈθɔːr.ni/

1.
2.
rumit, sukar, kompleks
causing difficulties or disagreements; complex and difficult to deal with
:
•
The negotiations faced many thorny issues.
Rundingan menghadapi banyak isu rumit.
•
It was a thorny problem that required careful consideration.
Ia adalah masalah rumit yang memerlukan pertimbangan teliti.