Unimaginative is a related term of monotonous.
As adjectives the difference between unimaginative and monotonous
is that unimaginative is not imaginative while monotonous is having an unvarying tone or pitch.
monotonous
English
Adjective
(
en adjective)
having an unvarying tone or pitch
tedious, repetitious or lacking in variety
Related terms
* monotone
* monotony
Synonyms
* monotonic
* samely