crasseux in English:

His hands were filthy.

He was always filthy and looked like he wasn't given enough food.

Look at this tablecloth - it's filthy!

filthy rich

I've never smoked - it's a filthy habit.

It was filthy. It took 3 hours to clean it.

Your habit of biting your nails is filthy.

People think that cockroaches are filthy animals.

What have you been doing? This shirt is filthy and this might not come off in washing.

She brushed the filthy hair back from her face and smiled

filthy clothes/car/room/hands

Your shoes are absolutely filthy

if something is filthy, it is extremely dirty

Everything still looked filthy.

Joe's idea for a new kind of car will make him filthy rich.

grimy hands/windows

The girl's face was grimy.

When you’re riding a bus or streetcar that’s so crowded you have to stand, you end up holding onto the handrails, which perpetually feel (and probably are) grimy from being handled by untold thousands of people before you.