Perfectly normal.
A person who lies only when necessary can be described as a "compulsive liar" or "occasional liar."
A monolingual.
That is called defamation or slander. It involves making false statements about someone with the intention of damaging their reputation.
When someone says their lies were a tangled web, it means that they have spun a complicated and interconnected series of deceitful stories. This can make it difficult for them to keep track of their lies and can lead to their deception being easily discovered.
White lies are minor lies told to avoid hurting someone's feelings or to avoid conflict. They are considered harmless and are often told with good intentions.
A knowledgeable person.
A Jonathan Stimson
You can call them George Costanza.
Don't call someone
The term for someone who does this specifically is "two-faced"
Someone who lies almost anything, even the smallest things.
The responsibility for impeaching someone lies with the Hourse of Representatives. The responsibility for trying the offense lies with the Senate.
I'd call them a pathological truther.
Only if you are an embezzler.
solo
Rhino
Gothic
Liberal