humdrum

名词 humdrum:

1. the quality of wearisome constancy, routine, and lack of variety
   同义词：monotony, sameness

形容词 humdrum:

1. not challenging; dull and lacking excitement
   同义词：commonplace, prosaic, unglamorous, unglamourous
2. tediously repetitious or lacking in variety
   同义词：monotonous

hum.drum

adj.（形容词）
Lacking variety or excitement; dull.See Synonyms at boring See Synonyms at dull
单调的，平凡的：缺少变化或刺激的；无生气的参见 boring参见 dull
n.（名词）
Monotonous talk or routine.
乏味的谈话：单调的谈话或老一套

来源：
Probably from hum
可能源自 hum