exceedingly

Compared meaning: to a very high degree (adverb).

比较义项：极端地，非常地（程度副词，表示程度很深）。

• extremely

  The most common, neutral intensifier, used freely in both speech and writing to mark almost any degree of strength; the default everyday choice.

  最常见、语气中性的强调词，口语和书面语中都可自由使用，可修饰几乎任何程度，是日常默认的选择。

  I'm extremely tired after the long flight.

  长途飞行后，我非常疲惫。

• exceedingly 本词

  A more formal, literary intensifier common in written English; it sounds somewhat old-fashioned or stiff in casual speech, so it is rarer in everyday conversation.

  更正式、书面化的强调词，常见于书面英语；在日常口语中显得有些老派或生硬，因此在日常对话中较少使用。

  The committee found the proposal exceedingly complex and asked for revisions.

  委员会认为这份提案极其复杂，因此要求修改。

Extremely and exceedingly both mean "to a very high degree" and can modify an adjective or adverb. Extremely is the most common, neutral word, used freely in speech and writing. Exceedingly is more formal and literary, common in writing but old-fashioned in casual speech.

这两个词都表示程度很深，可以修饰形容词或副词，但语气和使用场合不同：extremely 是最常用、最口语化的强调词，几乎适用于任何场合；exceedingly 更正式、书面化，日常口语中较少使用，带有一点老派或郑重的语气。