beginning

Compared meaning: the point when something begins (noun).

比较义项：某事物开始的时间点（名词）。

• beginning 本词

  The most neutral, general word for a starting point; fits almost any register and has no fixed collocation of its own.

  语气最中性、最通用的“开始”一词，几乎适用于任何语域，也没有专属的固定搭配。

  In the beginning, I found the course confusing, but everything eventually made sense.

  一开始，我觉得这门课很难懂，但后来一切都想通了。

• start

  Very common in everyday speech, often used in fixed phrases like 'get off to a slow start' or 'from start to finish'.

  在日常口语中非常常见，常出现在“get off to a slow start”或“from start to finish”这类固定搭配里。

  She got off to a slow start but improved by the end of the race.

  她一开始起步很慢，但到比赛结束时表现有所提高。

• outset

  Formal and literary; almost always appears in the fixed phrase 'from the outset', stressing the very first moment before anything unfolds.

  语气正式、书面化，几乎总是出现在“from the outset”这个固定短语中，强调事情尚未展开的最初那一刻。

  From the outset, everyone knew the project would be difficult.

  从一开始，大家就都知道这个项目会很困难。

Beginning, start, and outset all mean the point when something begins. Beginning is the most neutral, general word. Start is common in everyday speech, often in fixed phrases. Outset is formal and literary, used almost as 'from the outset'. Start's verb meaning is not compared.

这三个词都指“开始的那个时间点”，但语气和使用场合不同：beginning最中性通用，start更口语化、常见于固定搭配，outset更正式、书面化。这里不比较start作动词（“开始”）的用法。