- not sharp; blunt: a dull knife.
- causing boredom; tedious; uninteresting: a dull sermon.
- not lively or spirited; listless.
- not bright, intense, or clear; dim: a dull day; a dull sound.
- having very little depth of color; lacking in richness or intensity of color.
- slow in motion or action; not brisk; sluggish: a dull day in the stock market.
- mentally slow; lacking brightness of mind; somewhat stupid; obtuse.
- lacking keenness of perception in the senses or feelings; insensible; unfeeling.
- not intense or acute: a dull pain.
- to make or become dull.
- slow to think or understand; stupid
- lacking in interest
- lacking in perception or the ability to respond; insensitive
- lacking sharpness; blunt
- not acute, intense, or piercing
- (of weather) not bright or clear; cloudy
- not active, busy, or brisk
- lacking in spirit or animation; listless
- (of colour) lacking brilliance or brightness; sombre
- not loud or clear; muffled
- (of sound elicited by percussion, esp of the chest) not resonant
- to make or become dull
