| Word root/ prefix | Root Meaning | Words based on the Root |
| Log/o | word, doctrine, discourse | Logic - correct reasoning Monologue - a long speech by one speaker Analogy - similarity, especially between things otherwise dissimilar |
| Loqu, locu | speak | Eloquent - speaking beautifully and forcefully Loquacious - very talkative Elocution - art of public speaking |
| Luc | light | Elucidate - to explain, to throw light on Lucid - easily understood, giving off light Translucent - allowing light through. |
| Macro | large, great | Macroevolution - large scale evolution Macromolecule - a large molecule Macroeconomics - study of the overall forces of economy |
| Magn/a/i | great, large | Magnify - make larger Magnificent - grand Magnate - a powerful person, especially in business or industry. |