Keble.
Syn. -- Lifeless; inanimate; dead; stupid; doltish; heavy; sluggish; sleepy; drowsy; gross; cheerless; tedious; irksome; dismal; dreary; clouded; tarnished; obtuse. See Lifeless.
Dull, v. t. [imp. & p. p. Duller (?); p. pr. & vb. n. Dulling.] 1. To deprive of sharpness of edge or point. "This . . . dulled their swords." Bacon.
Borrowing dulls the edge of husbandry.
Shak.
2. To make dull, stupid, or sluggish; to stupefy, as the senses, the feelings, the perceptions, and the like.
Those [drugs] she has Will stupefy and dull the sense a while.
Shak.
Use and custom have so dulled our eyes.
Trench.
3. To render dim or obscure; to sully; to tarnish. "Dulls the mirror." Bacon.
4. To deprive of liveliness or activity; to render heavy; to make inert; to depress; to weary; to sadden.
Attention of mind . . . wasted or dulled through continuance.
Hooker.
Dull, v. i. To become dull or stupid. Rom. of R.
Dull"ard (?), n. [Dull + - ard.] A stupid person; a dunce. Shak. -- a. Stupid. Bp. Hall.
Dull"-brained` (?), a. Stupid; doltish. Shak.
Dull"-browed` (?), a. Having a gloomy look.
Dull"er (?), n. One who, or that which, dulls.
Dull"-eyed` (?), a. Having eyes wanting brightness, liveliness, or vivacity. Shak.
Dull"head` (?), n. A blockhead; a dolt. Ascham.
Dull"ish, a. Somewhat dull; uninteresting; tiresome. "A series of dullish verses." Prof. Wilson.
Dull"ness, n. The state of being dull; slowness; stupidity; heaviness; drowsiness; bluntness; obtuseness; dimness; want of luster; want of vividness, or of brightness. [Written also dulness.]
And gentle dullness ever loves a joke.
Pope.
Dull"-sight`ed (?), a. Having poor eyesight.
Dull"some (?), a. Dull. [R.] Gataker.
Dull"-wit`ted (?), a. Stupid.
The Gutenberg Webster's Unabridged Dictionary: Section D and E · The Wunder Library — complete classics, free to read, with narration.