What is what does it mean when you call someone a tool?

Calling someone a "tool" is generally considered an insult. It implies that you view them as:

• Being used or manipulated: Similar to a physical tool used for a specific task, you perceive them as being used by someone else for their own purposes, often without the "tool's" knowledge or consent.

• Lacking autonomy or intelligence: It suggests they are blindly following orders or doing someone else's bidding without thinking for themselves. They are viewed as an implement rather than an individual.

• Unpleasant or unlikeable: The term often carries a negative connotation and implies that the person is not well-regarded due to their actions or behavior, often related to being used by someone. It's a way of saying they are doing something objectionable to please another person.

In essence, calling someone a "tool" is a derogatory way of suggesting they are subservient, easily manipulated, and perhaps acting in a way that is morally questionable to benefit someone else.