manipulatory

/məˈnɪpjəˌlətɔri/
adjective
  1. Relating to or involving the act of handling, controlling, or influencing something or someone, often in a skillful or deceptive way.
    • The robot's manipulatory arm can assemble tiny parts with great accuracy.
    • The therapist studied the manipulatory techniques used in advertising.
    • His manipulatory gestures during the negotiation made others uneasy.