| Term | Definition |
| lampoon | To humor or ridicule with irony or sarcasm |
| largess | Generous giving (of money) to others who may seem inferior |
| laudable | Deserving praise |
| lax | Loose; lenient; negligent |
| levity | Overly casual; a lack of seriousness or formality |
| lexicon | A dictionary; a stock of terms relating to a certain subject or vocabulary |
| libertarian | One who supports individual rights and free will |
| libertine | A free thinker, usually used in a disparaging manner; one without any moral restraint |
| licentious | Immoral; unrestrained by manners of society |
| lilliputian | Very small |
| limber | Flexible; able to be shaped |
| lithe | Moving with the utmost grace; distinguished by effortless grace |
| loquacious | Talkative |