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be out on a limb
be out on a limb
To have done or said something that lacks evidence or support. Her hypothesis is really out on a limb—the facts don't support it at all. That politician is out on a limb after publicly questioning the views of his party.
be out on a limb
alone and lacking support from other people Because we're geographically so far removed from the main office, we do sometimes feel as if we're out on a limb.