tasteless
adj. B2 Upper Intermediate US //ˈteɪstɫəs// UK //tˈeɪstləs// taste·less
adj. having no flavor at all, or showing very poor judgment and being offensive. You use it for food that is boring or for jokes that are rude.
adj. lacking flavor or character; alternatively, showing a lack of aesthetic judgment or social propriety. Often used to describe food, decor, or behavior that is considered offensive or crude.
The hospital food was completely tasteless.
The comedian's tasteless jokes about the tragedy caused many audience members to leave the theater in protest.
While the interior of the mansion was grand, the owner's choice of neon furniture was widely criticized as tasteless and gaudy.
From taste + -less.
Usage
Can be used both literally for physical sensation and figuratively for social behavior.