mooner means one who abstractedly wanders or gazes about.
Etymology
From moon + -er.
noun
- One who abstractedly wanders or gazes about.“A "mooner," fond of staring into shop windows, or watching the labourers pulling up the pavement to inspect the gas-pipes, or listening stolidly to the dull "pech" of the paviour's rammer on the flags.”
- Someone who moons (drops their pants and shows their bare buttocks in public).“Though not an exhibitionist mooner like Rousseau, Jacques offers us his belaboured rump as an image of a brutalised, not loveless but misloved, childhood .”
- A lunatic.