| n. | 1. | The state of being dirty; filthiness; foulness; nastiness; baseness; sordidness. |
| Noun | 1. | dirtiness - the state of being unsanitary Synonyms: uncleanness Antonyms: cleanness - the state of being clean; without dirt or other impurities |
| 2. | dirtiness - the state of containing dirty impurities | |
| 3. | dirtiness - obscenity in speech or writing Synonyms: smuttiness |