Commonly-Used American Slang (Gírias Americanas com a letra A)

ace
He's an ace reporter. Meaning: very good

action
Do you know where the action is in this town? Meaning: excitement

airhead
My sister's boyfriend is a real airhead. Meaning: stupid person

all wet
Your ideas about politics are all wet. Meaning: completely wrong

all-nighter
I almost fell asleep during the test after an all-nighter. Meaning: after studying all night.

ammo
The gun was useless after the killer ran out of ammo. Meaning: ammunition

antifreeze
I really need some antifreeze in me on cold days like this. Meaning: liquor

armpit
This town is really an armpit. Meaning: undesirable place

awesome
What an awesome sunset. Meaning: great