| Term | Definition |
| lambaste | beat; thrash verbally |
| lancet | small surgical tool for making incisions |
| languid | weary; sluggish |
| languish | lose strength; lose animation |
| lank | long and thin |
| larceny | theft |
| largess | generous gift |
| lassitude | weariness |
| latent | dormant |
| laud | praise |
| lectern | reading desk |
| leery | suspicious; cautious |
| legerdemain | sleight of hand |
| lethargic | drowsy; dull |
| levee | embankment to prevent flooding |
| levity | lack of seriousness |
| levy | impose a fine |
| libertine | debauched person |
| lien | legal claim on a property |
| ligneous | like wood |
| lilliputian | extremely small |
| limber | flexible |
| limn | draw; outline; describe |
| limpid | clear |
| lineaments | features of the face |
| lionize | treat as a celebrity |
| list | tilt; lean over |
| litany | supplicatory prayer |
| lithe | flexible; supple |
| litotes | understatement for emphasis |
| loath | reluctant |
| lode | metal-bearing vein |
| log | record of a voyage; record of day-to-day activities |
| loll | lounge about |
| lope | gallop slowly |
| loquacious | talkative |