9 letters · 13 points in Scrabble
verb add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
originFirst attested in 1623; borrowed from Latin lūcubrātus, perfect passive participle of lūcubrō (“to work by candlelight”) (see -ate (verb-forming suffix)), from lūx (“light”).
Etymology from Wiktionary, CC BY-SA 3.0