Synonyms of observer

observer

noun

əb-ˈzər-vər 

as in spectator

someone who sees or watches something

observers of the boxing match seemed to be divided as to who won

Synonyms & Similar Words

• spectator
• viewer
• witness
• onlooker
• bystander
• watcher
• eyewitness
• spy
• voyeur
• peeper

Example Sentences

Recent Examples of observer

Journalists, Israeli activists and foreign observers have also been targeted. — Reuters, NBC news, 19 Oct. 2026

Seats designed for impact ANH Structure will design, develop, certify and manufacture a common seating platform for Valo’s pilots, observers and passengers. — Neetika Walter, Interesting Engineering, 17 Oct. 2026

Some observers took that as evidence that high gas prices alone wouldn’t push Americans toward fully electric cars, but that conclusion misses half the story. — John Paul Helveston, The Conversation, 16 Oct. 2026

The 49ers went on to dominate the Rams 27-7, drawing criticism from outside observers of Los Angeles’ approach. — Jonathan M. Alexander, Houston Chronicle, 16 Oct. 2026