Indelicatenesses is a complex word that refers to a lack of refinement or consideration in behavior or language. There are a myriad of synonyms that can be used to convey similar meaning, including tactlessness, insensitivity, impoliteness, rudeness, discourtesy, and inconsiderateness. Other options include the use of terms like brusqueness, thoughtlessness, crudeness, and boorishness, all of which convey a sense of a lack of social grace or finesse. It is important to choose the right synonym depending on the context and intended audience, as some words may be more appropriate in certain settings than others.