Random sageuk terms

Misc phrase

Do Won Gyeol Eui - making a righteous promise
Gol Bi Dan Ji - a sickly little kid
Dalgigongshim (랄기공심) - Intimidate and target one's vulnerability
Seongdonggyeokseo (성동격서) - Blindside the enemy

Misc terms

seo chool - illegitimate son
eol ja - illegitimate son of a slave
seon yeo - heaven maiden
orangkae - uriangkai, derogatory terms for Jurchens
Sachaek - book of historical records
Jeonwigyeoseo - document to announce the succession of the throne
Cheong Jeog - a document identifying the vulgar commoner's identity
Sigwon - answer sheet (for state exams)
Bulbae - extra (news)
Sillok - annals (of history)
bangnap - tribute payment
binyeo - hairpin
sunga-il (순가일) - a day off every ten days
maehwa (매화) - type of fireworks that you bury in the ground
Songnyeonmuk (송연묵 / 松烟墨) - pine soot ink stick

Useful refs for:
Jeon Woo Chi
Moonshine
Scholar who Walks the Night
Ruler: Master of the Mask
Arang
Bossam
Rookie Historian
Grand Prince
Other sageuk