onerous
US /ˈɑː.nɚ.əs/
UK /ˈɑː.nɚ.əs/

1.
berat, sukar, membebankan
involving a great deal of effort, trouble, or difficulty
:
•
The new regulations impose onerous burdens on small businesses.
Peraturan baharu mengenakan beban berat kepada perniagaan kecil.
•
He found the task to be quite onerous.
Dia mendapati tugas itu agak berat.