unexciting
un-ex-cit-ing
adjective
Not causing interest or enthusiasm; rather dull, ordinary, or boring.
"The lecture was quite unexciting."
Thesaurus
Synonyms: vapid, flat, juiceless, bland, unstimulating, dry, unglamourous, uninspired, tame, prosaic, commonplace, humdrum
Antonyms: exciting, stimulating