Pronunciation: (tāst'lis), [key]
1. having no taste or flavor; insipid.
2. dull; uninteresting.
3. lacking in aesthetic quality or capacity; devoid of good taste: a houseful of tasteless furnishings; a tasteless director of stale, dreary films.
4. lacking in politeness, seemliness, tact, etc.; unmannerly; insensitive: a tasteless remark.
5. lacking the physical sense of taste.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.