What context can I use each word in?
Learn when and how to use these words with these examples!
observer
Example
The scientist was an observer of the animal behavior in the wild. [observer: noun]
Example
She observed the painting for a long time, taking in every detail. [observed: verb]
onlooker
Example
The onlookers watched as the firefighters put out the fire. [onlookers: noun]
Example
As an onlooker, I could see that the situation was getting out of hand. [onlooker: noun]
Good things to know
Which word is more common?
Observer is more commonly used in formal or technical contexts, such as scientific research or journalism. Onlooker is more commonly used in everyday conversation or informal writing.
What’s the difference in the tone of formality between observer and onlooker?
Observer is generally considered more formal than onlooker, due to its association with professional or technical contexts.
