At first sight
On first sight and at first sight are semantically related. In some cases you can use "On first sight" instead an adverb phrase "At first sight".
On first sight
At first sight and on first sight are semantically related. You can use "At first sight" instead an adverb phrase "On first sight".
Mutual synonyms
Cite this Source
On first sight and At first sight. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/at_first_sight/on_first_sight
At first sight & On first sight. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/at_first_sight/on_first_sight>.
On first sight or At first sight. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/at_first_sight/on_first_sight.