Pronunciation: /əbˈzɝvər/
noun a person who is present at a particular event in order to watch it or take part in it
A1 The observer watched the birds in the park.
A2 As an observer, she noticed the changes in the environment.
B1 The observer carefully documented the behavior of the animals in the zoo.
B2 The observer's keen eye caught the subtle nuances of the performance.
C1 The observer's meticulous observations led to groundbreaking discoveries in the field of astronomy.
C2 The observer's unbiased perspective provided valuable insights into the social dynamics of the community.
formal The observer carefully noted each detail during the experiment.
informal The observer watched closely as the events unfolded.
slang The observer was lowkey creeping on us the whole time.
figurative As an observer of human behavior, she could see through people's facades.
observed
observers
more observant
most observant
observe
will observe
have observed
is observing
observer
observant
to observe
observing
observed