unvarying
Definitions
Not changing or fluctuating; constant.
Lacking variety or diversity; monotonous.
Examples
The landscape remained unvarying for miles, consisting only of flat, golden plains.
Despite the chaos surrounding him, he maintained an unvarying routine of meditation every morning.
Her unvarying tone of voice made it difficult to tell whether she was joking or serious.
Synonyms
constant monotonous steady uniform unchanging consistent static
Antonyms
variable changing fluctuating erratic inconsistent diverse unstable