Shirabe
単調
Common I-adj Noun
English jmdict
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi) monotony;monotone;dullness
This story is rather monotonous.
2
noun (common) (futsuumeishi)adjectival nouns or quasi-adjectives (keiyodoshi) mathematics monotone;monotonic