| Term | Definition |
| linear | straight, having to do with lines |
| literal | following the strict meaning of the words or events; word by word |
| lobby | the entrance hall, often in a public building |
| lukewarm | medium warm, tepid |
| lure | something that attracts or entices, often with a fake appearance |
| lush | full of growing plants, luxurious |
| maneuver | a clever movement or tactic |
| manifest | easily observed and understood |
| masterpiece | a person's greatest work, especially a great work of art |
| maverick | a horse that runs apart from the herd (originally an unbranded calf) |
| merciless | without mercy, cruel |
| merge | to combine, to blend, to become united |
| mirth | joyfulness, happiness, jollity, often accompanied by laughter |
| mollify | to calm or soother someone's feelings or temper |
| momentous | of great importance |
| monopoly | exclusive control or something, especially a type or business (in which ones is the only seller on the market) |
| mosaic | a picture made up of many small pieces of glass or tile |
| munificent | generous, or showing great generosity |