a rule of thumb

中立 B2 英検準1級 中上級

a rule of thumb

意味

A practical, approximate rule based on experience.

A rule of thumb originated in 17th century England at a time when quantities were measured by comparison to the width or length of a thumb.

直訳

親指の規則

例文

  • As a rule of thumb, drink water before every meal. 経験則として、食事のたびに水を飲むといい。
  • A good rule of thumb is to save ten percent. おおよその目安として、収入の一割を貯金するといい。