light-bulb moment

== English == === Etymology === From light bulb +‎ moment. === Noun === light-bulb moment (plural light-bulb moments) (informal, idiomatic) A moment of enlightenment, inspiration or sudden realization. Synonym: eureka moment ==== Translations ==== === References === “light-bulb moment”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.