Just as the title says, do you think it is possible for one to lie to another without speaking? 

Obviously, lies are (many times) easily detected, whether they are playful and joking lies not meant to really hide anything to sometimes lies that are trying to hide a certain past action from someone. And usually, lies are detected because someone spoke of it. 

Really, a person wouldn't know about a lie and whether something is a lie IF they have not heard it. 

Say I took some jelly beans. Say my mom sees that there are less jelly beans than there originally were, and asks me if I took any. 

1) I look her in the eyes, and say "No." with an uncertain aura, kind of shifty and getting sweaty palms and such. 
2) Look at her, then walk away. 

In situation one, I physically told her a lie, and there were some signs that showed evidence of lying. In situation two, I never gave an answer, and therefor doesn't know what my answer is, and really if I am lying or not. 

Anyway, I certainly believe that you can possibly lie without physically saying a lie, yet I can't really find a way that that may happen. Sure you can make gestures, but how is that really saying a lie? 
In other words, I say yes, but I can't really say why. I don't know, some sort of not present logic. 

What do you think? Please do not judge others and post in any hurtful way. 

My example is pretty vague, and isn't a very good one. Sorry about that.

Well it isn't a lie, but you aren't being truthful either. Do you get what I am saying? You aren't lying, but you aren't doing the right thing and telling the truth.

Yes, you can lie using body language, just like you can communicate with it.

It is indeed possible to lie without having to say a word. Like all you can do is just nod or point at something... etc while showing something thats not true. Like for example, if someone asks you "Who stole this?" and then you randomly point at a person who didn't steal this, then that would be lying without saying a word. As simple as that. Hopefully you guys don't do that often. (I'm just kidding, lol) XD

I guess it is possible to lie without words being said by body posture and such. To me, it's really more not saying the truth though, but lying without saying a word sounds possible to me.

I'm not sure if I'm just being annoyingly technical. But what if someone says: "If you're the queen of Mexico, raise you hand" and you raise your hand in response... that is in fact, lying without saying a word.

this sittuation is not a matter of lying. by not answering the question, thats what you did. you didnt answer. you have no obligation to tell anyone anything, and some jelly beans you ate from the kitchen isnt exactly stealing. you live there, the food is for you too, so theres no problem.

as for lying without saying anything, the only way you could do so was if you conveyed something in sign language, writing it down, etc. you would have to give some form of answer, and it be untruthful. that is the only way to lie.

I don't really know an answer to this question. There isn't much you can do if you say nothing, but some people can just tell if you're shifty or not in a glance.

If someone asks you whether or not you took the jelly beans and you shake your head, you are communicating something that is untrue to them, which is a lie. If you do the example that you gave (where you simply walk away) that is technically not a lie because you did not say anything. It is also not telling the truth, so one could say that it is untruthful.

Well, if they asked you to respond with a simple yes nod or no shake, then that wouldn't be talking.
In terms of not actually implying anything by communication of any sorts... There's just ways to tell if someone is suspicious.