ruler

/ˈruːlə(r)/ (bre, ipa) · /ˈruːlər/ (ame, ipa) · /ˈrü-lər/ (ame, mw)

ruler — noun

  • rulersingular
  • rulersplural

1. A person who holds the highest authority in a country or region and makes decisi

1.名詞B1
釋義

A person who holds the highest authority in a country or region and makes decisions that affect the people living there.

例句

Sayaka said a wise ruler must think about the needs of all citizens.

adjective + ruler + must + verb — describing ideal qualities

The emperor was a strict ruler who demanded loyalty from every official.

同義詞
  • leader

    more general term for anyone who guides or directs others; 'ruler' implies formal authority over a country or region

  • monarch

    a hereditary ruler such as a king or queen, ruling for life or until abdication

  • sovereign

    a supreme ruler, especially in a monarchy; emphasises total independence and authority

  • governor

    the head of a region within a larger political system, such as a state or province, rather than a whole country

反義詞
  • subject

    a person who lives under the authority of a ruler

  • citizen

    a member of a country with rights, rather than someone who governs it

文法句型

ruler + of + country/region

adjective + ruler

用法筆記

Often paired with an adjective that describes the nature of the rule, such as 'fair ruler', 'harsh ruler', or 'elected ruler'. The word can refer to monarchs, presidents, or any person with supreme governing power.

常見錯誤

❌The queen was a strict ruler of her household.
✅The queen was a strict ruler of the kingdom.
💡'ruler' in this sense means a leader of a country or large region, not of a private home.

2. A measuring tool that is a flat strip with printed marks for units of length, us

2.名詞A2
釋義

A measuring tool that is a flat strip with printed marks for units of length, used for checking the size of things and guiding a pencil to produce even lines.

例句

Reuben took a plastic ruler from his bag to measure the length of the book.

take + a ruler + to measure — classroom collocation

The teacher asked everyone to use a ruler when drawing the diagram.

同義詞
  • measuring stick

    a more general term that includes rulers, yardsticks, and tape measures

  • straightedge

    a ruler without measurement markings, used only for drawing straight lines

文法句型

ruler + for + purpose

use + a ruler + to-infinitive

adjective + ruler

用法筆記

Described by material (plastic ruler, wooden ruler) or length (a 15 cm ruler, a 12-inch ruler). In technical drawing, a ruler without markings is called a straightedge.