Drab (adjective)

1. Lacking brightness or interest; dull or dreary.
2. Of a dull or pale brown color.
3. Lacking liveliness or excitement.

Origin:

Mid 17th century, from drab cloth, of unknown origin.

Examples:

1. The new apartment was drab, with gray walls and no decorations.
2. She was wearing a drab dress that blended in with the crowd.
3. The city was drab and gray after days of rain and clouds.
4. The lecture was drab, with little interaction and no multimedia aids.
5. The atmosphere in the room was drab, as everyone was tired and drained from the long hours of work.