Voila, ciao, bingo, & ta-da

Voila, ciao, bingo, & ta-da are informal ways to convey a message in a single word.

Voila means "here it is!" or "look at this!" in French. In English, it's used to call attention to something that has just been done or explained:

Add a little oil and vinegar to the lettuce, and voila -- you have an easy salad.

It snaps into place, and voila! You have a new window shade.

Ciao is an Italian greeting (used for both hello and goodbye). Also, it is used for spanish speakers in some countries such Colombia to only say goodbye). In English it's an informal way of saying goodbye.

Bingo, when used as an interjection, can mean "that's it!" or "you've got it!" [="exactly!" ="now you understand!" ="now you see what I mean!"].

"You mean he lied to us?" "Bingo!" [="exactly!']

It can also mean surprise! or that something is done quickly enough to cause surprise:

All of a sudden, bingo, there he is, and we were just talking about him.

Then -- bingo! The idea hit me.

I asked her to do it and bingo! It was done immediately.

Ta-da! is almost sung -- it's used as a little fanfare to announce something:

Ta-da! Here's your birthday present!