In predicative use: astray, lost; (figurative) perplexed; = will, adj.

Of which some one has been deprived; not retained in possession; no longer to be found. Also, of a person or animal: Having gone astray, having lost…

That has lost one's way; straying, ‘lost’.

Lost in pathless places, at a loss for one's way; figurative confused mentally.

transferred and figurative. Lost as in the bush. Australian and New Zealand colloquial.