Uninteresting (adjective)

Not arousing curiosity or interest; not interesting.

Origin:

From the word "un" meaning "not" and "interesting" meaning "arousing curiosity or interest".

Examples:

1. The lecture was uninteresting and I couldn't keep my attention focused.
2. His uninteresting conversation made the party a drag.
3. The book was uninteresting and I couldn't finish it.
4. The movie was uninteresting and failed to hold my attention.
5. The exhibit was uninteresting and failed to draw a crowd.