go out on a limb

go out on a limb

To do or say something that lacks evidence or support. She really went out on a limb with that hypothesis—the facts don't support it at all. That politician went out on a limb and publicly questioned the views of his party.
See also: limb, on, out

go out on a limb

COMMON If you go out on a limb, you do something or say something that is different from what most people do or say and is therefore risky. He does not want to go out on a limb and try something completely new. There's nothing wrong with politicians going out on a limb sometimes and risking their reputation.
See also: limb, on, out