Dictionary.com

dull

[ duhl ]
/ dʌl /
Save This Word!
See synonyms for: dull / dulled / duller / dulling on Thesaurus.com

adjective, dull·er, dull·est.

verb (used with or without object)

to make or become dull.

QUIZZES

QUIZ YOURSELF ON AFFECT VS. EFFECT!

In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.

Origin of dull

1200–50; Middle English; akin to Old English dol foolish, stupid; cognate with German toll
1. Dull, blunt refer to the edge or point of an instrument, tool, or the like. Dull implies a lack or a loss of keenness or sharpness: a dull razor or saw. Blunt may mean the same or may refer to an edge or point not intended to be keen or sharp: a blunt or stub pen; a blunt foil. 7. Dull, blunt, slow, stupid are applied to mental qualities. Dull implies obtuseness, lack of imagination: a dull child. Blunt implies loss of original keenness of intelligence through disease, sad experience, or the like: His critical faculties were blunt. Slow applies to a sluggish intellect: a slow mind. Stupid implies slowness of mental processes, but also lack of intelligence, wisdom, prudence, etc.: a stupid person.
dullness, dulness, noundully, adverbun·dulled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for dull

dull
/ (dʌl) /

adjective

verb

to make or become dull
dullish, adjectivedullness or dulness, noundully, adverb
Old English dol; related to Old Norse dul conceit, Old High German tol foolish, Greek tholeros confused
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

Medical definitions for dull

dull
[ dŭl ]

adj.

Lacking responsiveness or alertness; insensitive.
Not intensely or keenly felt, as in pain.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Idioms and Phrases with dull

dull

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
Learning At Home Just Got Easier!