shocking or embarrassingly rude
immodest - bold
‘Immodest’ is used for two main purposes. Firstly, to describe a person who has a very high opinion of themselves and is brash and rude about letting people know how great they are. Secondly, to express something that exceeds what is considered socially acceptable in a way that can be embarrassing or shocking.
Have you seen how short Anne’s dress is? How could she wear something so immodest to a work function?
Nobody likes Jack because he’s ungraciously immodest about his achievements and capabilities.
We all contributed to the success of the project, but our manager had the immodesty to say he had done the most.