They frequently criticize your achievements, choices, or appearance, often in a negative or dismissive manner.
They always try to one-up you or compete with you, even in situations where it's unnecessary or unrelated.
They display indirect hostility or resentment towards you through subtle digs, sarcasm, or backhanded compliments.
They minimize your successes, ignore them, or claim credit for them.
They exhibit signs of discomfort, tension, or irritation when you share good news or discuss positive aspects of your life.
They may disseminate tales about you to harm your reputation or sow mistrust.
They're indifferent to your aims and don't support them.