dullest

Adjective

dull (comparative duller, superlative dullest)

1. Lacking the ability to cut easily; not sharp.
   • All these knives are dull.

   Synonyms:

   blunt

   Antonyms:

   sharp

2. Boring; not exciting or interesting.
   • He sat through the dull lecture and barely stayed awake.

   Synonyms:

   banal, basic, mindless, beat, blah, commonplace, bland, boring, cold, colourless

3. Not shiny; having a matte finish or no particular luster or brightness.
   • Choose a dull finish to hide fingerprints.

   Synonyms:

   lackluster, matte, bland, colourless, dim, dingy, faint, leaden, muddy, sad

   Antonyms:

   bright

4. Not bright or intelligent; stupid; having slow understanding.
   • She is not bred so dull but she can learn.c. 1596–1598 (date written), William Shakespeare, “The Merchant of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward]...

   Synonyms:

   addlebrained, addlepated, airheaded, bee-brained, beef-witted, soft, beefheaded, beetle-headed, birdbrained, blockheaded

   Antonyms:

   astute, brainy, bright, brilliant, clever, educated, genius, gifted, hivey, ingenious

5. Sluggish, listless.
   • This people's heart is waxed gross, and their ears are dull of hearing.1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], →OCLC, Matthew 13:xiii

   Synonyms:

   ponderous, slothful, bone-idle, fainéant, idle, indolent, inert, lackadaisical, lazy, lither

6. Bored, depressed, down.
   • I felt dull all day.

   Synonyms:

   atrabiliary, atrabilious, blitheless, dispirited, blue, bummed out, chapfallen, cheerless, chopfallen, crestfallen

See all 19 meanings of dull