In body language, there are subtle but effective means of conveying threat. These may vary across cultures and situations, but they generally include: 1. **Excessive staring**: Sustained and direct eye contact can convey aggression or challenge. 2. **Facial expressions**: Furrowing your brow, pursing your lips, or keeping your face expressionless can give a sense of seriousness or threat. 3. **Body posture**: Standing straight, with your chest held high, or adopting a posture that expands your personal space can suggest a potential confrontation. 4. **Gestures**: Quick, sudden hand movements, such as pointing, making a fist, or waving your palm back and forth, can be threatening. 5. **Approaching others**: Invading another person’s personal space, especially at close range, can make them feel uneasy or threatening. 6. **Pace and speed**: Approaching another person with a quick or forceful pace can be seen as a threat. 7. **Tightened muscles**: Clenched fists or tense muscles can show readiness to fight or attack. 8. **Changes in voice**: Although not body language, a sudden rise or fall in the tone of voice can also accompany body language to convey threat. These body language signals often need to be interpreted in context, as certain actions may not be threatening in certain cultures or contexts.