anodyne adjective formal containing nothing that will offend anyone or cause disagreements, and therefore rather boring

arid adjective something that is arid is not very interesting or exciting

banal adjective something that is banal is boring because it contains nothing new, original, or unusual

barren adjective without any interesting or positive features

bland adjective not interesting, exciting, or original, and therefore boring

colorless the American spelling of colourless

colourless adjective not interesting, exciting, or original

dead adjective a place, time, or situation that is dead is not very interesting because very little happens in it

deadly adjective informal very boring

derivative adjective something that is derivative is not very interesting or impressive because it is based on something else instead of being original

dispiriting adjective making you lose the hope, enthusiasm, or interest you had earlier

dour adjective British not pleasant, interesting, or exciting

drab adjective not colourful or interesting

dry adjective used about periods of time

dry adjective very serious and boring

dully adverb in a dull way

featureless adjective with no interesting or noticeable features

flat adjective with very little business or activity happening

forgettable adjective quickly forgotten because of having no interesting or special qualities

formulaic adjective using a standard pattern that has been used many times before and is therefore not interesting or original

godforsaken adjective a godforsaken place has no interesting or attractive qualities at all

grey adjective boring

hackneyed adjective hackneyed words or ideas have been used so often that they no longer seem interesting or original

inert adjective not exciting or interesting

laborious adjective a laborious job or process is long, difficult, and often boring

laborious adjective a laborious way of doing something is slow or boring and therefore annoys people

laboured adjective speaking, writing, or performing in a way that is not natural or interesting because it seems as though you are making too much effort

lacklustre adjective not lively, exciting, or impressive

lifeless adjective not interesting or exciting

middle-aged adjective used for suggesting that someone’s behaviour, clothes etc are boring and typical of middle-aged people

monotonous adjective a monotonous sound or voice is boring and unpleasant because it does not change in loudness or become higher or lower

not someone’s bag phrase not something that you enjoy or are interested in

numbing adjective so boring that you stop paying attention

old hat adjective informal not interesting because people have known it for a long time

pallid adjective not lively, exciting, or interesting

plain old phrase not at all unusual, interesting, or special

plodding adjective slow and boring

repetitious adjective happening or done many times in a way that becomes boring

ritual adjective done regularly and always in the same way, and often boring for that reason

sad adjective very informal a sad person is someone who you think is boring or who behaves in a way that does not deserve respect

samey adjective Britishinformal not interesting because there is little change or variety

serviceable adjective good enough to be used for a particular purpose but not very attractive or exciting

slow adjective not busy, exciting, or full of activity

soporific adjective formal used about things that are very boring

soulless adjective not at all interesting or attractive

stale adjective not new, original, or interesting

sterile adjective a sterile room or environment lacks colour, is not very interesting or comfortable, and is very clean

sterile adjective a sterile life is not very interesting and lacks fun and enjoyment

stodgy adjective boring and not easy to read

stultifying adjective very boring, so that you feel like going to sleep instead of paying attention

stupefying adjective making you unable to think clearly, for example because you are very bored

tame adjective something that is tame is slightly boring because it is not exciting, interesting, powerful, or dangerous enough

tiresome adjective making you feel annoyed or bored

trite adjective a trite remark is not interesting or original because it is what people usually say in that situation

trivial adjective not very important, serious, or valuable

uneventful adjective without anything unusual or exciting happening

unexceptionable adjective formal satisfactory and not deserving any criticism, but often also without any special or interesting qualities

unimaginative adjective not interesting

uninspiring adjective not making you feel interested or excited

wearisome adjective formal a wearisome activity or time is one that makes you feel tired or bored

well-trodden adjective already done or discussed, and no longer necessary, interesting, or useful