Where Does the Word Effulgence Come from?

Effulgence derives from the Latin verb fulgēre, which means "to shine." Fulgēre is also the root of fulgent, a synonym of radiant that English speakers have used since the 15th century. Another related word, refulgence, is about 30 years older than effulgence.

What does effulgence mean in the Bible?

: a radiant or resplendent quality or state : brilliance.

Where did the word really originate?

really (adv.)

The general sense is from early 15c. Purely emphatic use dates from c. 1600, "indeed," sometimes as a corroboration, sometimes as an expression of surprise or a term of protest; interrogative use (as in oh, really?) is recorded from 1815.