disallow

Compared meaning: to formally refuse to allow something (verb).

比较义项：正式地禁止或不批准某事（动词）。

• prohibit

  Prohibit is formal and official, typically used for laws, rules, or regulations that ban an action; it often appears in passive constructions like 'is prohibited'.

  prohibit较为正式和官方，通常用于法律、规则或条例禁止某种行为，常用被动结构，如“被禁止”。

  The park rules prohibit riding bikes on the grass.

  公园规定禁止在草坪上骑自行车。

• forbid

  Forbid is more general and can express a personal command, not just an official rule; it is often followed by 'someone from doing something' and can sound quite strong or authoritative.

  forbid更为通用，既可以表示官方规定，也可以表示个人下达的命令，常接“某人做某事”的结构，语气可能相当强硬。

  The strict teacher would forbid students from using phones in class.

  这位严格的老师禁止学生在课堂上使用手机。

• veto

  Veto refers specifically to officially rejecting a decision, law, or proposal using one's formal power, typically in politics or leadership; it is not used for ordinary everyday actions.

  veto特指利用正式的权力正式否决某项决定、法律或提案，通常用于政治或领导层，不用于日常普通行为。

  The senate leader threatened to veto any bill that raised taxes.

  参议院领袖威胁要否决任何加税的法案。

• disallow 本词

  Disallow means to officially refuse to accept something as valid, often used for results, claims or decisions, such as an official ruling that a goal or expense does not count.

  disallow指正式拒绝承认某事有效，常用于结果、索赔或裁定，例如官方裁定某个进球或费用不予承认。

  The referee decided to disallow the goal because of an offside.

  裁判判定这个进球因越位而不予承认。

These four verbs mean formally refusing to allow something. Prohibit is most formal, for laws and rules. Forbid can be a personal or official command. Veto means rejecting a decision, in politics. Disallow means refusing to accept something as valid. Not compared: forbid's archaic sense.

这四个词都表示正式地不允许或禁止某事，但语气和使用场合不同：prohibit最正式，多用于法律条文；forbid可用于个人或官方的强硬命令；veto特指用权力正式否决决定或提案；disallow侧重拒绝承认结果或申请的有效性。这里不比较forbid“使不可能”等其他古旧或引申用法。