1. Body language: Liars may exhibit unusual or tense body movements, such as fidgeting, avoiding eye contact, or touching their face. They may also lean away or create physical barriers between themselves and the person they are lying to.

2. Inconsistencies in their story: Liars often struggle to keep their lies consistent and may change minor details or provide contradictory information when questioned further.

3. Lack of eye contact: People who are lying may avoid making direct eye contact as they may feel guilty or uncomfortable.

4. Verbal cues: Liars may hesitate, stutter, or stumble over their words as they try to come up with a convincing story. They may also provide vague or overly detailed answers to divert attention.

5. Sudden changes in behavior: If someone’s behavior suddenly changes from their usual pattern, it could be a sign that they are being deceitful. This could include becoming unusually defensive, aggressive, or evasive.

6. Microexpressions: These are quick, involuntary facial expressions that reveal true emotions. When someone is lying, they may display microexpressions of fear, disgust, or contempt that contradict their deceptive words.

7. Inconsistency in non-verbal cues: Liars may display incongruent non-verbal cues. For example, they may nod their head while saying „no” or smile when discussing a serious or sad topic.

It is important to note that these signs are not foolproof indicators of lying, and it is always best to consider the context and seek additional evidence before making a conclusion.