lucubrator
Etymology
From lucubrate + -or.
lucubrator means One who lucubrates. Lexicurio rates it Rare gem — a strength score of 77 out of 100.
Why this word is great
LUCUBRATOR — [Noun] One who labors or studies late into the night by lamplight. From Latin lūcubrātor, agent noun from lūcubrāre ("to work by lamplight"), from lūx, lūc- ("light") + -brāre (verb-forming suffix). Unlike a "night owl," which suggests a creature of habit or mere circadian preference, or a "scholar," a broad title for learning blind to the hour, a lucubrator is defined by the willful, devotional act of solitary toil. It is the quiet scratch of a pen on paper, the slow shrinking of a candle, and the stark companionship of one's own shadow thrown large upon the wall—a votary offering the hours of darkness to the quiet god of unfinished work.