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What is another word for lacking seriousness?

Need synonyms for lacking seriousness? Here's a list of similar words from our thesaurus that you can use instead.

Adjective
Silly or inappropriate in nature
superficial
silly
frivolous
childish
facetious
fatuous
flip
flippant
puerile
vacuous
ditzy
foolish
goofy
inane
juvenile
nonserious
skittish
non-serious
flighty
giddy
scatterbrained
dizzy
featherbrained
harebrained
birdbrained
ditsy
yeasty
futile
frothy
lightheaded
thoughtless
dippy
dotty
nutty
whimsical
batty
irresponsible
dopey
idiotic
zany
vapid
light
perky
barmy
light-headed
light-minded
empty-headed
feather-brained
pea-brained
empty
meaningless
infantile
immature
asinine
pointless
stupid
scatty
brainless
dappy
bubbleheaded
bird-brained
capricious
careless
trifling
crazy
fickle
gaga
heedless
forgetful
shallow
excitable
reckless
impulsive
insouciant
impetuous
carefree
rattlebrained
daffy
kooky
wacky
bemused
wild
simple
daft
screwy
senseless
witless
hare-brained
airheaded
lunkheaded
half-witted
weak-minded
petty
ridiculous
weird
flakeyUS
flakyUK
childlike
dingbat
dingdong
unstable
erratic
excited
dreamy
inattentive
unreliable
unsystematic
vague
absent-minded
feather-headed
not thinking clearly
not with it
with a mind like a sieve
nonsensical
absurd
crackpot
preposterous
simpleminded
lunatic
loony
cuckoo
looney
insane
kookie
screwball
jerky
mad
unwise
tomfool
whacky
cockeyed
dumb
dense
inept
sappy
balmy
ignorant
mindless
obtuse
unsmart
unintelligent
half-baked
fool
featherheaded
out to lunch
dull
thick
slow
thickheaded
dim
doltish
lamebrained
boneheaded
oafish
chuckleheaded
lamebrain
bonehead
opaque
gormless
dozy
knuckleheaded
pinheaded
dorky
illiterate
dunderheaded
softheaded
dopy
soft
know-nothing
vacant
unschooled
not the full shilling
brain-dead
thick-witted
pea-brain
uneducated
slow-witted
slow on the uptake
untaught
soft in the head
dim-witted
“The study carried out on the technology required remains undisclosed, whilst comparative analysis of alternative sites is viewed as lacking seriousness and as being rigged and even flawed.”
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See Also

Nearby Words
lacking sincerity
lacking skill
lacking social skills
lacking substance
lacking subtlety
lacking success
lacking sentiment
lacking sensation
lacking self-restraint
lacking self-control
lacking self-confidence
lackings
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