Dull synonyms such as assuage, banal, colourless, bleak, faint, blunt, apathetic, boneheaded, allay, and alleviate. Dull is an adjective, and its antonyms are sunny and bright. Additionally, here are 227 synonyms and nearby words for dull as well as words beginning with
D, and Du.
227 synonyms for dull
1. uninteresting
banal
bland
characterless
colourless
commonplace
derivative
dreich
dry as dust
dull as dishwater
dullsville
featureless
flat
humdrum
insipid
lacking excitement
lacking interest
lacking variation
lacking variety
lifeless
monotonous
no great shakes
not up to much
ornery
pedestrian
plodding
ponderous
prosaic
run-of-the-mill
soulless
tiresome
uneventful
unexciting
unimaginative
uninspiring
uninteresting
unoriginal
unremarkable
unstimulating
wearisome
2. drab
colourless
drab
dreary
faded
lacklustre
lustreless
muddy
muted
pale
sombre
subdued
subfusc
toned down
washed out
watery
3. overcast
dim
dismal
dreary
grey
leaden
louring
murky
overcast
sombre
subfusc
sunless
4. muffled
faint
indistinct
muffled
muted
smothered
softened
stifled
suppressed
5. blunt
blunted
dulled
edgeless
not sharp
unkeen
unsharpened
worn down
6. slack
apathetic
asthenic
depressed
dopey
dozy
drowsy
enervated
fatigued
flat
inactive
inert
languid
lethargic
listless
logy
lymphatic
neurasthenic
slack
sleepy
slow
slow-moving
sluggish
somnolent
static
torpid
unenergetic
weary
yawny
7. unintelligent
boneheaded
bovine
brain-dead
brainless
chuckleheaded
cretinous
daft
dense
dim
dim-witted
doltish
dopey
dozy
dull-witted
dunce-like
dunderheaded
empty-headed
fat-headed
half-witted
idiotic
imbecilic
lamebrained
mindless
moronic
muttonheaded
not the full shilling
obtuse
pig-ignorant
slow
slow on the uptake
slow-witted
soft in the head
stolid
thick as two short planks
unintelligent
vacuous
witless
wooden-headed
8. lessen
allay
alleviate
assuage
bedim
benumb
blacken
bleach
blur
cast a pall over
cast down
crush
dampen
darken
daze
deaden
decolorize
decolour
decrease
desensitize
dim
diminish
drug
ease
etiolate
extinguish
fade
fog
lessen
lower
mitigate
mute
narcotize
numb
obtund
pale
palliate
put a damper on
render insensitive
sap
sedate
shadow
shake
smother
soften
soothe
stifle
stupefy
suppress
take the edge off
tone down
torpefy
tranquillize
veil
wash out