a.

1. 平凡的
   Their life consisted of the humdrum activities of everyday existence.

   他們的生活由日常生存的平凡活動所構成。

2. 單調的；無聊的
   The accountant said it was the most humdrum day that she had ever passed.

   會計師說這是她所度過的最無聊的一天。

n.

1. 平凡
   They might marry, and sink to the humdrum of other old married people.

   他們可能結婚，然後陷於像那些老年夫妻一樣的平凡。

2. 單調；無聊
   Don't do anything stupid because of the humdrum.

   不要因為無聊而幹蠢事。

vi.

1. 單調乏味地進行
   The work humdrumed on for days.

   這工作單調乏味地進行了好幾天。

adj.

n.