Liar 

To dream that someone is calling you a liar signifies that you will be annoyed by a particular person.

To dream that you are lying means that you are trying to make yourself believe in something that you know is wrong.

To dream that someone is a liar shows your increasing disgust towards a person. You may have lost your trust in that individual.

To dream that your lover is a liar portends that disagreements will likely break the friendship.