casual
observer
The tension between the pair was obvious to even the most casual observer.
The casual observer would never imagine he had such a difficult start in life.
To the casual observer, Fran and Alexa must seem like an odd couple.
SMART Vocabulary: related words and phrases
Audiences and spectators
behind closed doorsidiom
bums on seatsidiom
bystander
captive audience
closed
consumption
fan park
fly on the wallidiom
flâneur
goer
innocent bystander
non-viewer
observer
onlooker
operagoer
pep rally
spectator
supporter
viewership
watcher