A jealous and violent person can not hide his or her nature for too long. Below are signs to look out for:

1. Excessive possessiveness: They may display extreme possessiveness over their partner or loved ones, not allowing them to interact freely with others.
2. Controlling behavior: A jealous and violent person often tries to control every aspect of their partner’s life, including their social interactions, activities, and even appearance.
3. Constant accusations: They may regularly accuse their partner of infidelity or betrayal without any substantial evidence, driven by deep-seated jealousy.
4. Explosive anger: Jealous and violent individuals can have intense and uncontrollable outbursts of anger, often resulting in physical or emotional harm to others.
5. Threats and intimidation: They may use threats or intimidation tactics to manipulate and control their partner, using fear to maintain dominance in the relationship.
6. Isolation: They may isolate their partner from friends, family, and support systems, attempting to create dependence and limit outside influences.
7. Physical aggression: Jealous and violent individuals may resort to physical violence, such as hitting, slapping, pushing, or other forms of physical abuse.
8. Emotional manipulation: They may use emotional manipulation tactics, such as guilt-tripping, gaslighting, or emotional blackmail, to exert control over their partner.
9. Unpredictable behavior: Jealous and violent individuals may exhibit erratic and unpredictable behavior, making it difficult for their partner to anticipate their reactions.

It is important to remember that these signs should not be taken in isolation, as each individual is unique, and behaviors can vary in intensity and frequency. If you suspect that someone may be displaying such behaviors, it is crucial to prioritize safety and seek support from professionals, such as counselors, therapists, or domestic violence hotlines, who can provide guidance and assistance.