passer-by
TV-viewer
adventurer
alpinist
astronaut
attestant
attestator
attester
beholder
bird-watcher
bystander
camper
climber
cojuror
comers and goers
commuter
compurgator
cosmopolite
cruiser
deponent
drugstore cowboy
earwitness
excursionist
explorer
eyewitness
fare
gaper
gazer
gazer-on
girl-watcher
globe-girdler
globe-trotter
goer
goggler
hajji
informant
informer
jet set
jet-setter
journeyer
kibitzer
looker
looker-on
mariner
mountaineer
observer
ogler
onlooker
palmer
passenger
passer
passers-by
footer
pedestrian
walker
caller
depredator
diner
eastbound
expectoration
family
farsight
honeymooners
horsetail
housemate
idler
indianian
intruder
landlubber
listener
lordling
lounger
loving cup
menswear
neighbors
nimrod
ninepin
on-looker
orange-peel
passersby
pilferage
pilgrim
policeman
schmuck
shopgirl
sight-seer
sincei
spectator
spelunking
stranger
tourist
traveler
travelers
traveller
villager
visitor
wage-slave
wanderer
wayfarer
wayfaring