Hevy 'duty' would be the closest canon word. Otherwise, there's the non-canon word drahlaat.

When looking for a word, you should try the Search page. Keep in mind to search for root words (e.g. "run" instead of "running", "dragon" instead of "dragons"). If there are no results there, that means there is no direct canon translation. Oftentimes there's a word that means something similar. Feel free to ask here on the Question Board if there are ny close words.

As a last resort, you can try the Legacy Search page, which includes fanmade (non-canon) words.