| Word | Definitions | Synonyms |
|---|---|---|
| indelible | (adjective) cannot be removed or erased | Synonyms: unerasable |
| indelicate | (adjective) lacking propriety and good taste in manners and conduct | Synonyms: indecorous |
| (adjective) verging on the indecent | - | |
| (adjective) in violation of good taste even verging on the indecent | Synonyms: off-color, off-colour | |
| undelineated | (adjective) not represented accurately or precisely | - |