tasteless

US /ˈteɪst.ləs/
UK /ˈteɪst.ləs/
"tasteless" picture
1.

having no flavor

:
The soup was bland and tasteless.
This bread is so dry and tasteless.
2.

lacking in aesthetic judgment or good taste

:
Her dress was quite tasteless, with too many ruffles and bright colors.
The comedian's jokes were often crude and tasteless.