Body language: Look for signs of discomfort such as fidgeting, avoiding eye contact, or sudden changes in posture.
Verbal cues: Listen for inconsistencies in their story, or a lack of detail.
Emotional response: Observe if their emotional response seems incongruent with what they're saying.
Micro expressions: Brief, unconscious facial expressions that can reveal concealed emotions.
Overcompensation: Liars may try too hard to convince you, using overly confident or dramatic language.
Note: It's important to keep in mind that not all liars exhibit these behaviors, and sometimes people may display these behaviors without lying.