L

lackey - noun a male servant (especially a footman); a person who tries to please someone in order to gain a personal advantage
lackluster - (adj.) lacking luster or shine; lacking brilliance or vitality
lagniappe - noun a small gift (especially one given by a merchant to a customer who makes a purchase)
lampoon - noun a composition that imitates somebody's style in a humorous way; verb ridicule with satire
liaison - noun a channel for communication between groups; a usually secretive or illicit sexual relationship
licentious - adj. lacking moral discipline; especially sexually unrestrained
lucubration - noun laborious cogitation; a solemn literary work that is the product of laborious cogitation
lugubrious - adj. excessively mournful