unfun
funlessness
funless
unenjoyable
no fun
unexciting
unamusive
unamusing
nonfunny
nonplayful
unplayful
unentertainable
unjoyous
unentertaining
unamusable
disenjoyment
tame
unhumorous
nonhumorous
uncomical
unfunky
ungleeful
funlessly
nonplayable
noncomedic
antifun
uncomedic
uncontentable
unmemorable
unhumoured
sober
unjocular
serious
unexcited
nonenthusiastic
passionless
unenjoyed
unthrilling
unlively
unpassionate
ungamelike
nonhumoral
unenjoying
unenjoyment
playful
nonpleasurable
unwitty
hasslefree
nonexciting
nonmemorable
noncomedy
unrelishable
unvivacious
unentertained
unadventuresome
unfabulous
nonexcited
unfunny
unenthused
unprovocative
uncreative
unsmiling
unfacile
unflattering
unprovoking
raising hell
dullness
nonconvivial
hell raising
unsuspenseful
kicks-and-giggles
uncaptivating
unawesome
ungreat
undelightsome
playlessness
undelighting
clown around
nonpassionate
nondramatic
tongue-in-cheek
nonconvenient
uncheerful
unelated
noncreative
unenthusiasm
unenthusiastic
unadvantageous
disadvantageous
nonenthusiasm
nonadvantageous
unfond
humdrum
uncontent
ungladsome
unleisured
unfun
funless
unenjoyable
no fun
unexciting
unamusive
unamusing
nonfunny
nonplayful
unplayful
unentertainable
unjoyous
unentertaining
unamusable
tame
unhumorous
nonhumorous
uncomical
unfunky
ungleeful
nonplayable
noncomedic
antifun
uncomedic
uncontentable
unmemorable
unhumoured
sober
unjocular
serious
unexcited
nonenthusiastic
passionless
unenjoyed
unthrilling
unlively
unpassionate
ungamelike
nonhumoral
unenjoying
playful
nonpleasurable
unwitty
hasslefree
nonexciting
nonmemorable
unrelishable
unvivacious
unentertained
unadventuresome
unfabulous
nonexcited
unfunny
unenthused
unprovocative
uncreative
unsmiling
unfacile
unflattering
unprovoking
nonconvivial
unsuspenseful
uncaptivating
unawesome
ungreat
undelightsome
undelighting
nonpassionate
nondramatic
tongue-in-cheek
nonconvenient
uncheerful
unelated
noncreative
unenthusiastic
unadvantageous
disadvantageous
nonadvantageous
unfond
humdrum
uncontent
ungladsome
unleisured
funlessly
funlessness
unfun
disenjoyment
unenjoyment
noncomedy
raising hell
dullness
hell raising
kicks-and-giggles
playlessness
unenthusiasm
nonenthusiasm
clown around
English words for 'not fun'
As you may have noticed, above you will find words for "not fun". Hover the mouse over the word you'd like to know more about to view its definition. Click 
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.
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