dirtiest
adj. 肮脏(dirty 的最高级形式)
例句
He always picked the hardest and dirtiest jobs.
他总是挑最脏最累的活干。
《新英汉大辞典》
But coal is also seen as the dirtiest fuel.
但是煤炭也被看作最肮脏的燃料。
I wouldn't say Stockton was the dirtiest player in the league.
我不认为斯托克顿是联盟最脏的球员。