Get at

I have a lot of money in my trust fund. I just can't get at it.

We need to get at the root cause of all this.

I don't understand. What are you getting at?

He's a bit disheartened. The newspapers have been getting at him again.

My cat was badly injured after the neighbour's dog got at her.

That was a ridiculous verdict. I think the jury was got at.

Stop procrastinating on your work and get at it!

I've got some things to do for about an hour. After that, get at me.