adjective, -er, -est, verb | 1. | not sharp; blunt: a dull knife. |
| 2. | causing boredom; tedious; uninteresting: a dull sermon. |
| 3. | not lively or spirited; listless. |
| 4. | not bright, intense, or clear; dim: a dull day; a dull sound. |
| 5. | having very little depth of color; lacking in richness or intensity of color. |
| 6. | slow in motion or action; not brisk; sluggish: a dull day in the stock market. |
| 7. | mentally slow; lacking brightness of mind; somewhat stupid; obtuse. |
| 8. | lacking keenness of perception in the senses or feelings; insensible; unfeeling. |
| 9. | not intense or acute: a dull pain. |
| 10. | to make or become dull. |

dull (dŭl)
adj. dull·er, dull·est
Lacking responsiveness or alertness; insensitive.
Not intensely or keenly felt, as in pain.