1. readily open to change; unstable or volatile
Usage: formal
2. characterized by emotions that change rapidly and unpredictably
Usage: psychology
3. readily undergoing change; chemically unstable
Usage: chemistry

Examples

• The patient’s labile blood pressure required constant monitoring.
• Her labile mood swings made it difficult to predict her reactions.
• The labile compound decomposed quickly when exposed to heat.
• Political alliances in the region remain highly labile.
• The labile nature of the stock market worried investors.
• Children often display labile emotions during times of stress.