1. Slow of understanding; wanting readiness of apprehension; stupid; doltish; blockish. "Dull at classical learning." Thackeray.
"She is not bred so dull but she can learn." -- Shak.
2. Slow in action; sluggish; unready; awkward.
"This people's heart is waxed gross, and their ears are dull of hearing." -- Matt. xiii. 15.
"O, help my weak wit and sharpen my dull tongue." -- Spenser.
3. Insensible; unfeeling.
"Think me not So dull a devil to forget the loss Of such a matchless wife." -- Beau. & Fl.
4. Not keen in edge or point; lacking sharpness; blunt. "Thy scythe is dull." Herbert.
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." Shak.
"As turning the logs will make a dull fire burn, so changes of study a dull brain." -- Longfellow.
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." -- Keble.
Syn. -- Lifeless; inanimate; dead; stupid; doltish; heavy; sluggish; sleepy; drowsy; gross; cheerless; tedious; irksome; dismal; dreary; clouded; tarnished; obtuse. See Lifeless.