1.Slow of understanding; wanting readiness of apprehension; stupid; doltish; blockish. "Dull at classical learning." "She is not bred so dull but she can learn."
2.Slow in action; sluggish; unready; awkward. "This people's heart is waxed gross, and their ears are dull of hearing." "O, help my weak wit and sharpen my dull tongue."
3.Insensible; unfeeling. "Think me not So dull a devil to forget the loss Of such a matchless wife."
4.Not keen in edge or point; lacking sharpness; blunt. "Thy scythe is dull."
5.Not bright or clear to the eye; wanting in liveliness of color or luster; not vivid; obscure; dim; as, a dull fire or lamp; a dull red or yellow; a dull mirror.
6.Heavy; gross; cloggy; insensible; spiritless; lifeless; inert. "The dull earth." "As turning the logs will make a dull fire burn, so changes of study a dull brain."
7.Furnishing little delight, spirit, or variety; uninteresting; tedious; cheerless; gloomy; melancholy; depressing; as, a dull story or sermon; a dull occupation or period; hence, cloudy; overcast; as, a dull day. "Along life's dullest, dreariest walk."