Look on
Look on verb - Observe with attention.
Watch
Watch verb - To keep one's eyes on.
Usage example: I turned my head to continue watching the bird as it flew away
Mutual synonyms
Both terms in one sentence
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If you watch closely, you can see the moment he pastes a naïve, Upper-Class Twit look on his face.
Source: Series / Rome -
The look on Optimus's face as he realized what he had done is uncomfortable to watch.
Source: Mind Rape / Western Animation - Forced to Watch: In Greta's dream, Susan's head after Aslan eats her body is forced to look on her sister getting eaten, her brothers getting forcibly changed, and the lion and the witch having sex.
Cite this Source
Watch and Look on. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/look_on/watch
Look on & Watch. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/look_on/watch>.
Watch or Look on. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/look_on/watch.
Google Ngram Viewer shows how "look on" and "watch" have occurred on timeline