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.
- dullness, dulness, noun
- dully, adverb
- un·dulled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use dull in a sentence
While it was mild fun exploring areas to find the puzzle pieces, repeated activities started to dull any sense of adventure, and it started to feel, once again, like a bullet point off an open-world checklist.‘Immortals: Fenyx Rising’ is a worthy adventure wavering between cringe and charm | Gene Park | November 30, 2020 | Washington Post
Here’s a great SEO case study example showing off this structure without being dull or boring.Seven most popular types of blog posts guaranteed to boost traffic | Karl Tablante | November 30, 2020 | Search Engine Watch
Plastic-wrapped cookies and cookies sent in tins seemed to absorb their powder, leaving them a bit dull.
If he has ever written a bad, dull or disappointing book, I haven’t seen it.‘Eddie’s Boy,’ by Thomas Perry, continues the saga of a retired hit man who can’t escape his past | Bill Sheehan | November 29, 2020 | Washington Post
First, was the Wild Huckleberry 8-Acid Polishing Peel which was used to help “gently polish away dull, dead skin.”Taraji P. Henson’s AMA Makeup Look Had To Complement A Whopping 10 Outfit Changes | cmurray | November 23, 2020 | Essence.com
Gravity is transformed from the constraint that holds us dully to Earth into the power that lets us fly.
“Toward the end, you didn't know it was bodies anymore,” Helen says dully.
Garnache opened his eyes and stared a second dully at the disturber of his feigned slumbers.St. Martin's Summer | Rafael Sabatini
Presently a pair of bloodshot eyes were opened and looked dully round the room.The Weight of the Crown | Fred M. White
They tried to make as little noise as possible, but though they walked on tiptoe, the sound echoed back to them dully.The Adventure Girls at K Bar O | Clair Blank
Dully, his intellect numbed as his body was numbed, he went back to his tasks,—tasks that were seemingly endless.The White Desert | Courtney Ryley Cooper
Dully, hazily, he stared at it with his red eyes, with the faint feeling of a duty neglected.The White Desert | Courtney Ryley Cooper
British Dictionary definitions for 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
med (of sound elicited by percussion, esp of the chest) not resonant
to make or become dull
- dullish, adjective
- dullness or dulness, noun
- dully, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Other Idioms and Phrases with dull
In addition to the idiom beginning with dull
- dull as dishwater
- never a dull moment
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.