1. Able to change appearance, behavior, or character readily and often deceptively; adaptable in a shifty or unprincipled way.
Usage: Often used to describe someone who changes their views or personality to suit different situations or audiences.

Examples

• The politician's chameleonic nature made it hard to know what he truly believed.
• She had a chameleonic ability to fit in with any social group.
• His chameleonic approach to ethics troubled his colleagues.
• The actor's chameleonic talent allowed him to disappear into every role.
• The company's chameleonic strategy shifted with each new market trend.
• Critics accused him of being chameleonic, changing his positions whenever convenient.