Meaning : In violation of good taste even verging on the indecent.
Example :
An indelicate remark.
An off-color joke.
Synonyms : off-color, off-colour
Meaning : Lacking propriety and good taste in manners and conduct.
Example :
Indecorous behavior.
Synonyms : indecorous
Characterized by propriety and dignity and good taste in manners and conduct.
The tete-a-tete was decorous in the extreme.Meaning : Verging on the indecent.
Example :
An indelicate proposition.