| dull | make less lively or vigorous |
|---|---|
| dull | become dull or lusterless in appearance |
| dull | become less interesting or attractive |
| dull | make dull in appearance |
| dull | make dull or blunt, as of sharp edges or knives' blades |
| dull | make numb or insensitive |
| dull | deaden (a sound or noise), esp. by wrapping |
| dull | (of business) not active or brisk |
| dull | emitting or reflecting very little light |
| dull | (of color) very low in saturation |
| dull | slow to learn or understand |
| dull | darkened with overcast |