Worryingly is an adverb, and it does a job that beginners rarely need but writers use constantly: it comments on the whole sentence rather than on one verb. Put it at the front — 'Worryingly, no one has heard from him since Tuesday' — and it means 'and this is the part that makes us anxious'. The speaker is stepping outside the facts for a moment to tell you how to feel about them. Compare 'Sadly, he lost' or 'Strangely, the door was open'; same move.

Worryingly is an adverbworryingly是個副詞, and it does a job that beginners rarely need but writers use constantly而且做的是初學者很少需要、但作家常常在用的事: it comments on the whole sentence rather than on one verb它評論的是整句話，而不是單一個動詞。Put it at the front把它放在句首 — 'Worryingly, no one has heard from him since Tuesday'『Worryingly, no one has heard from him since Tuesday』 — and it means 'and this is the part that makes us anxious'意思是『而這正是讓我們擔心的部分』。The speaker is stepping outside the facts for a moment說話者暫時跳出事實本身 to tell you how to feel about them來告訴你該怎麼看待這些事。Compare 'Sadly, he lost' or 'Strangely, the door was open'可以對照『Sadly, he lost』或『Strangely, the door was open』; same move是同樣的手法。

Its other use is before an adjective, where it means 'to a degree that causes concern': worryingly thin, worryingly quiet, worryingly high. 'Her hands were worryingly cold.' This is a favourite of news reporting and of anyone writing carefully — it flags concern without shouting.

Its other use is before an adjective它另一種用法是放在形容詞前面, where it means 'to a degree that causes concern'意思是『嚴重到讓人擔心的程度』: worryingly thin, worryingly quiet, worryingly high像worryingly thin（瘦得讓人擔心）、worryingly quiet（安靜得讓人擔心）、worryingly high（高得讓人擔心）。'Her hands were worryingly cold.'『Her hands were worryingly cold.』（她的手冷得讓人擔心）This is a favourite of news reporting and of anyone writing carefully這是新聞報導和用心寫作的人很愛用的說法 — it flags concern without shouting它能表達擔憂，卻不用大呼小叫。

It is far commoner in British English than American, and it belongs to writing and to careful speech more than to chat with friends. Built simply: worry → worrying (the adjective describing something that causes anxiety) → worryingly, with -ly, the ending that makes adverbs.

It is far commoner in British English than American它在英式英文裡比美式英文常見得多, and it belongs to writing and to careful speech more than to chat with friends而且比較屬於寫作和講究的談話，不太用在朋友閒聊。Built simply構詞很簡單: worry → worrying (the adjective describing something that causes anxiety) → worryinglyworry → worrying（形容讓人焦慮的東西的形容詞）→ worryingly, with -ly, the ending that makes adverbs加上把字變成副詞的字尾-ly。