small

Compared meaning: not large in amount or quality, but acceptable (adjective).

比较义项：形容数量、程度或质量“不算多／不算突出，但过得去”的说法（形容词）。

• small 本词

  Means simply little in amount or size, with no judgement of whether that is good or bad; the most basic, neutral word on this scale, and the only one that clearly signals 'not enough' rather than 'good enough'.

  意思就是数量或体积少，本身不带好坏评价；是这组词里最基本、最中性的说法，也是唯一明确表示“不够”而非“尚可”的词。

  The company posted only a small profit this quarter.

  这家公司本季度的利润非常少。

• average

  Describes something that matches the typical or usual level for its group, not necessarily low; it compares against a norm rather than saying an amount is small or good.

  表示与该群体的一般水平相符，不一定就是低；它是跟“常态”作比较，而不是说数量少或质量好。

  His test score was average, right in the middle of the class.

  他的考试成绩中等，正好在班级中游。

• fair

  Rates something as reasonably good or acceptable, above poor but below excellent; unlike the others it carries a positive quality judgement rather than describing a small quantity.

  表示某事物相当不错、可以接受，比“差”好但比不上“优秀”；跟其他几个词不同，它带有正面的质量评价，而不是形容数量少。

  His grasp of French is fair, though far from fluent.

  他的法语掌握得还算可以，但远谈不上流利。

• modest

  Describes an amount that is small but presented as adequate or unpretentious, often used approvingly for income, size, or success to soften the fact that it is not large.

  形容数量虽小但被认为是够用的、不张扬的，常用于收入、规模或成就，带有委婉、不夸张的正面语气。

  The couple lives in a modest house on the edge of town.

  这对夫妇住在镇边一栋不大但过得去的房子里。

Small, average, fair, and modest all describe something not large, but differ. Small means little. Average means typical for its group, not necessarily low. Fair means reasonably good, better than poor. Modest means small but presented as good enough. Other meanings are not compared here.

这几个词都能形容数量、程度或质量“不算大、不算突出”，但语气和感情色彩不同，学习者常混淆。这里不比较 fair 表示“公平的、公正的”（如 That's not fair）的意思，也不比较 modest 形容人“谦逊、不自负”（如 modest about his achievements）的意思。

Compared meaning: small in size or amount (adjective).

比较义项：微小的、体积或数量小的（形容词）。

• slim

  Slim is mainly used for abstract quantities like chances, margins or profits, or to describe a slender body shape; it does not describe ordinary small objects.

  slim 主要用于机会、余地、利润等抽象数量，或形容人体型纤细；它不用来形容普通的小物件。

  The odds of finding survivors after so many days looked increasingly slim.

  过了这么多天，找到幸存者的希望看起来越来越渺茫。

• tiny

  Tiny is a vivid, informal intensifier meaning extremely small, stronger than small; it is common for physical objects, animals and babies but not for abstract chances or margins.

  tiny 是一个生动、口语化的加强说法，意为“极其微小”，语气比 small 更强；常用于实物、动物和婴儿，但不用于抽象的机会或余地。

  A tiny ant carried a crumb far bigger than itself across the kitchen floor.

  一只微小的蚂蚁扛着一块比自己大得多的面包屑，爬过厨房地板。

• small 本词

  Small is the neutral, general-purpose word for size or amount, usable in almost any context, formal or informal, without extra emotional or intensifying color.

  small 是表示体积或数量的中性通用词，几乎适用于任何语境，无论正式或口语，不带额外的感情色彩或强调语气。

  The company started as a small business with only three employees.

  这家公司最初只是一家只有三名员工的小企业。

• little

  Little is informal and often carries affection or warmth alongside smallness, especially before nouns for people, animals or objects; it rarely modifies abstract quantities.

  little 是口语化用词，常带有亲昵或喜爱的感情色彩，多与人、动物或物品的名词连用，很少修饰抽象的数量。

  She keeps a little notebook in her purse to jot down ideas.

  她的手提包里放着一个小笔记本，用来随手记下想法。

Slim, tiny, small, and little all mean small in size or amount. Slim is for abstract things like chances. Tiny is vivid, meaning extremely small. Small is the neutral, general word. Little is informal, often warm or affectionate. Small's 'unimportant' sense is not compared here.

这几个词都可以表示“微小、数量或体积小”，但语气和搭配不同：slim 多用于抽象的机会、余地等，或指人体型纤细；tiny 强调极其微小，语气生动；small 是最常用的中性说法；little 语气口语化，常带亲昵或喜爱的感情色彩。这里不比较 small 的“不重要的”这一义项。