Is Not Telling The Complete Truth Considered As A Lie?

Google defines Lie as:

• Tell an untruth; pretend with intent to deceive; "Don't lie to your parents"; "She lied when she told me she was only 29"
• A statement that deviates from or perverts the truth

So no. A lie is telling something you know to be untrue.

• If it's not true, but you thought it was true, it's not a lie.
• If you don't explicitly state it, it's not a lie.
• A Lie of Omission exists only if you're Catholic (as derived from "sin of omission").

First, understand what lying is. Lying is the act of deliberately NOT telling the truth on order to gain illicit freedom or some other gain. It is commonly done in three ways.

• By falsifying information, swearing one truth when the contrary is true.
• By withholding information, presenting part of the truth, but not the whole.
• By manipulating information, misleading understanding by implying one truth to draw attention away from another.

Yes! It's lying!!

Good Reading > Why Children Lie and What To Do About It

I believe it is lying when you don't tell the complete truth. It's the right thing to do (to tell the truth).

After being a therapist for 10 years, I can attest from personal experience, no one but no one is ever capable of telling the whole truth, and therefore I am neither shocked nor offended when someone is caught lying. I am more intrigued when someone actually admits to a lie, and takes responsibility, if not in a timely way, at least taking responsibility at all.

By the dictionary, it isn't, but there is a separate name for that. It's a "White Lie." I don't know where that phrase comes from. It would be when you tell the truth, but omit something from it.

Usually, an act of omission is used to avoid responsibility for our own bad deeds.

However, I do believe that there are times when this sort of "lack of detail" is acceptable- such as when divulging more will injure another person.

This is how I see things as society is now. In a perfect world, total truth would be preferred.

T

Techniquely I guess not because you are just omitting information.

Think about it this way...You're on a test for school, and you have a really long true or false statement. If one little bit inside of the statement is false, than it makes the whole statement false.

When you do not say something or omit part of it, then it becomes a lie even if only a small part of the statement.

Webster (at least many years ago) used to define "Lying" as "An Intent To Deceive". I'm an old guy, and have always felt that that definition is the best I've ever encountered. If a person intends to deceive another, either by what is said or by what is not said, it is a lie. That definition has served me well over the years I've used it. I may sometimes lie, though I try not to do so, but if I do, I cannot pretend I do not. (I usually realize that I've lied only after the fact, when trying to evaluate a response. . .)