Effulgence
noun /ɪˈfʌldʒəns/ — A radiant, brilliant light that seems to pour outward from within.
Definition
A brilliant, intense radiance — a luminous outpouring of light that seems to come from within rather than being reflected from without. Used also of people whose presence radiates warmth or brilliance.
Beyond the definition
Effulgence is not just brightness — it is brightness that moves outward, that fills a room. The word has a generosity built into it. It describes the light of someone who cannot help but illuminate what is around them.
Origin & history
From Latin effulgere (to shine out), from ex (out, forth) + fulgere (to shine, flash). Related to fulgent, fulminate, and the Latin root that gives us refulgent and fulgurate.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The sun hit the water in full effulgence, and she stood there, unable to move.
There was an effulgence to his enthusiasm that made every room brighter.
The cathedral at noon had an effulgence that no photograph could capture.
Synonyms
radiance, brilliance, luminosity, splendour, resplendence
Antonyms
dimness, shadow, darkness, obscurity
Related words
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Internal Radiance of a Moment

A brilliant, intense beam of sunlight strikes a flower on a city balcony, seeming to emanate radiance from within.
The intense brilliance of the light represents an outpouring that feels like it comes from the flower itself. It mirrors the effulgence of a person whose presence radiates warmth or brilliance, seeming to glow with an inherent, internal light.
Image credit: Wordspun · AI-generated conceptual illustration