What is lier definition?

The word "lier" does not have a clear definition in English. However, it could be a typo or a misspelling of the word "liar," which means a person who tells lies or falsehoods. A liar can intentionally deceive others by making false statements, hiding the truth, or manipulating information to their advantage. Lying is generally considered a negative behavior, and people who lie often face consequences such as losing trust, damaging relationships, or even facing legal consequences in some cases.