The slang insult "tool" represents which insult?

Question

I know it's an insult , but what's it relating you to ? Dumb ? Jerk ? Pushover? which insult is it

Answer 1

I know all but you gotta try to google their meanings...

Answer 2

I took it to me someone who doesn't stand up for themselves, but I find many people don't understand the meaning. They just hear it being used in a demeaning manner and decide to use it in place of words such as fool, loser, idiot, etc.

Answer 3

someone who doesn't act for themselves, a slave