The definition of a bystander is a person who stands near but doesn't take part in an event.
A person who sees or watches something without taking an active part; onlooker
The definition of a witness is a person who has seen an event or who testifies about what he has seen.
A person who watches without taking part; spectator
The official seat, center of authority, jurisdiction, or office of a bishop.
Find another word for looker-on. In this page you can discover 10 synonyms, antonyms, idiomatic expressions, and related words for looker-on, like: audience, bystander, observer, spectator, witness, beholder, onlooker, watcher, awareness and see.