| Quantität | quantity |
| quantitativ | quantitative |
| Qualität | quality |
| Quantil | quantile |
| Quartett | quartet quartette |
| Entität | entity |
| Identität | identity |
| Mutität | muteness |
| Inanität | inanity |
| Dualität | duality |
| Humanität | humanity |
| Vanität | vanity |
| Quartil | quartile |
| Quarzit | quartzite |
| Aquatinta | aquatint |
| Quadrat | square |
| Quadriga | quadriga |
| Quant | quantum |
| Quanten | big trotters boats clodhoppers |
| Quantor | quantifier |