observer

[uhb-zur-ver]

noun

1. someone or something that observes.

2. a delegate to an assembly or gathering, who is sent to observe and report but not to take part officially in its activities.

3. U.S. Air Force.

   1. a member of an aircrew, other than the pilot, holding an aeronautical rating.

   2. a person who maintains observation in an aircraft during flight.

4. Also called air observer,. Also called aircraft observer. U.S. Army.,  a person who serves in an aircraft as a reconnoiterer and directs artillery fire.

Other Word Forms

• observership noun
• interobserver noun

Word History and Origins

Origin of observer¹

First recorded in 1545–55; observe + -er ¹

Example Sentences

Many observers in Mexico view the designation of cartels as terrorist groups — which the government vociferously opposed — as providing a possible justification for attacking cartels on Mexican territory.

From Los Angeles Times

The improvement has been too slow in the view of some observers, although many other schools systems have yet to catch up pre-pandemic achievement.

From Los Angeles Times

The Venezuelan leader claimed victory in last year's elections, widely viewed as rigged by international observers.

From BBC

Xi will be joined by North Korea's Kim Jong Un and Russia's Vladimir Putin, viewed by some observers as a message to the Western nations that have shunned them.

From BBC

Seasoned observers of the Rangers scene will tell you that the toxicity around him is probably unparalleled.

From BBC

Related Words

• bystander 
• onlooker 
• viewer 
• watcher 
• witness