dull

Compared meaning: not interesting; causing boredom (adjective).

比较义项：无聊、乏味、缺乏趣味（形容词）。

• boring

  The everyday, neutral word for anything that fails to interest you; used casually about people, movies, jobs, or conversations, without implying length or lack of originality.

  日常最常用、中性的词，可以形容任何让人不感兴趣的人、电影、工作或谈话，不强调时间长短或缺乏创意。

  My cousin is so boring that everyone avoids sitting next to him at parties.

  我表弟太无聊了，大家在派对上都不想坐在他旁边。

• pedestrian

  A more formal, literary word describing writing, ideas, or performances that are unimaginative and predictable, rather than simply uninteresting; rarely used for people directly.

  更正式、书面化的词，多用于形容写作、想法或表演缺乏想象力、平庸老套，而不只是单纯的无趣；很少直接用来形容人。

  The critic dismissed the novel's plot as pedestrian, full of tired clichés.

  评论家批评这部小说的情节平庸乏味，满是老掉牙的套路。

• dull 本词

  Milder and quieter than boring, often describing a flat, uneventful atmosphere, routine, or mood, rather than something actively annoying; also common for weather or personality.

  语气比boring更温和、更安静，常形容平淡、毫无起色的气氛、日常生活或心情，而不是让人恼火的无趣；也常用来形容天气或性格。

  Life in the quiet village felt dull, with the same routine every single day.

  在这个安静的村子里生活很乏味，每天都重复着同样的日常。

• tedious

  Emphasizes that a task or process drags on too long and feels tiring to endure, not just uninteresting; typically collocates with tasks, procedures, or lectures.

  强调某项任务或过程持续太久、令人厌烦难耐，而不只是单纯的无趣；常与任务、流程或讲座搭配使用。

  Filling out the same paperwork three times was a tedious process that wasted the whole morning.

  把同样的文件填三次是一件冗长乏味的事，浪费了整个上午。

Boring, pedestrian, dull and tedious all mean not interesting. Boring: the everyday word for anything uninteresting. Pedestrian: formal, literary, describing unimaginative, predictable writing or ideas. Dull: milder, describing a flat, quiet atmosphere or mood. Tedious: a task or process that drags on and feels tiring.

这几个词都可以形容让人觉得无趣、缺乏吸引力的事物，但语气、正式程度和搭配对象不同：boring最常见随意，dull更温和、偏书面，pedestrian正式且多用于写作或想法，tedious强调过程冗长令人厌烦。这里不比较pedestrian作名词表示“行人”的用法，也不比较dull表示“钝的”或“暗淡的”等其他义项。

Compared meaning: lacking brightness or light (adjective).

比较义项：暗淡的，缺乏光亮（形容词）。

• dull 本词

  Describes a general lack of brightness or vividness, used broadly for weather, colors, surfaces or light; it does not specifically mean the light source itself is weak.

  泛指缺乏光亮或鲜艳感，可用于天气、颜色、表面或光线等，不一定特指光源本身微弱。

  The overcast sky made the afternoon look dull and grey.

  阴天让整个下午显得暗淡灰暗。

• dim

  Specifically describes a light source or illumination that is weak or faint, often making it hard to see clearly; commonly used for lamps, rooms or streetlights.

  特指光源本身微弱、昏暗，常使人难以看清楚，多用于灯光、房间或街灯等。

  She switched on a dim lamp so as not to wake the baby.

  她打开一盏昏暗的台灯，以免吵醒婴儿。

Dull and dim can both describe a lack of light. Dull is broader, for weather, colors, surfaces, or light in general. Dim means a light source or place is weak or faint, hard to see by, for lamps or rooms. Not compared: dull meaning boring.

dull 泛指缺乏光泽或色彩，可用于天气、颜色、表面或光线，强调整体不鲜明；dim 专指光线本身微弱、昏暗，让人难以看清楚，多用于灯光或房间。这里不比较 dull 常见的“乏味、无聊”这一义项（如原例句中的用法）。