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.

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Ciao is an Italian greeting (used for both hello and goodbye). In English it's an informal way of saying goodbye.

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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.

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

Ta-da! Here's your birthday present!