Forget it

You think you're getting into university with these grades? Well, forget it!

You said we could go to the mall! —Forget it! Look at the state of this room! You're going to stay here and clean up before you go anywhere.

Near-synonyms: don't worry; who cares, I don't care

What were you saying? – Oh, it was nothing important, forget it.

Near-synonym: don't worry

Thank you so much! How can I repay you for your kindness? – Forget it; it was nothing.

Near-synonyms: (vulgar) fuck it, fuck this

It's raining. I said, "It's raining." Do you hear me? It's raining! Oh, forget it!

So, life is disappointing? Forget it. We have no problems here. In here, life is beautiful! The girls are beautiful! Even the orchestra is beautiful.