Unduly means more than is normal, fair, or reasonable — 'too much, and that is a problem'. It is an adverb, so it attaches to adjectives and verbs: 'unduly worried', 'unduly harsh', 'unduly optimistic', 'don't worry unduly'.

Unduly means more than is normal, fair, or reasonable意思是超過正常、公平或合理的程度 — 'too much, and that is a problem'也就是「太過頭了，而且這是個問題」。It is an adverb它是副詞, so it attaches to adjectives and verbs所以會接在形容詞和動詞後面: 'unduly worried', 'unduly harsh', 'unduly optimistic', 'don't worry unduly'像「unduly worried」（過度擔心）、「unduly harsh」（過分嚴厲）、「unduly optimistic」（過度樂觀）、「don't worry unduly」（別過度擔心）。

Why not just say 'too'? Because 'too' is blunt and 'unduly' is measured. 'Too worried' sounds like ordinary talk. 'Unduly worried' sounds like someone weighing the situation and delivering a judgement: given the facts, your worry has gone past what the facts support.

Why not just say 'too'?為什麼不乾脆說「too」就好？Because 'too' is blunt and 'unduly' is measured因為「too」很直白，而「unduly」比較經過衡量。'Too worried' sounds like ordinary talk「Too worried」聽起來像一般的講法。'Unduly worried' sounds like someone weighing the situation and delivering a judgement「Unduly worried」聽起來像有人在衡量情況後下判斷: given the facts, your worry has gone past what the facts support意思是根據事實來看，你的擔心已經超過事實所能支持的程度。

So it belongs to careful, considered English — doctors, lawyers, teachers, official letters, serious journalism. Two friends do not say 'you're unduly anxious'; they say 'you're stressing too much'.

So it belongs to careful, considered English所以它屬於謹慎、經過思考的英文 — doctors, lawyers, teachers, official letters, serious journalism醫生、律師、老師、公文、嚴肅的新聞報導會用。Two friends do not say 'you're unduly anxious'兩個朋友之間不會說「you're unduly anxious」; they say 'you're stressing too much'他們會說「you're stressing too much」（你想太多了）。

Look at where it actually appears, because this is the part students find useful. The single most common home for it is the negative, softly reassuring sentence: 'I wouldn't worry unduly.' 'She was not unduly concerned.' 'This need not unduly alarm us.' Here the speaker is calming someone down without pretending there is nothing at all to worry about — they are saying the worry exists, but it should not be big. That is a very English kind of gentleness, and 'unduly' is one of its favourite tools.

Look at where it actually appears來看看它實際上會出現在哪裡, because this is the part students find useful因為這部分對學生特別有用。The single most common home for it is the negative, softly reassuring sentence它最常出現的地方，是那種帶著否定、溫和安慰語氣的句子: 'I wouldn't worry unduly.'「I wouldn't worry unduly.」（我不會過度擔心。） 'She was not unduly concerned.'「She was not unduly concerned.」（她沒有過度在意。） 'This need not unduly alarm us.'「This need not unduly alarm us.」（這不需要讓我們過度驚慌。） Here the speaker is calming someone down without pretending there is nothing at all to worry about這裡說話的人是在安慰對方，但並沒有假裝完全沒什麼好擔心的 — they are saying the worry exists, but it should not be big而是說擔心是存在的，只是不應該太大。That is a very English kind of gentleness這是一種很英式的溫柔, and 'unduly' is one of its favourite tools「unduly」正是它常用的工具之一。

It sits with words about feeling and judgement: worried, concerned, alarmed, harsh, generous, influenced, pessimistic, difficult, long. Though actually — 'unduly generous' is worth a second look, since generous is a good thing. The word can still attach, because it is not judging good vs bad; it is judging appropriate vs excessive. Even a good quality can go past the right amount.

It sits with words about feeling and judgement它常常搭配跟感覺、判斷有關的字: worried, concerned, alarmed, harsh, generous, influenced, pessimistic, difficult, long像 worried（擔心）、concerned（在意）、alarmed（驚慌）、harsh（嚴厲）、generous（大方）、influenced（受影響）、pessimistic（悲觀）、difficult（困難）、long（長）。Though actually不過話說回來 — 'unduly generous' is worth a second look「unduly generous」值得多想一下, since generous is a good thing因為 generous 明明是件好事。The word can still attach這個字還是可以搭配上去, because it is not judging good vs bad因為它評判的不是好或壞; it is judging appropriate vs excessive而是評判恰當或過頭。Even a good quality can go past the right amount就算是好的特質，也可能超過恰當的程度。