Definitions
01a regulation
A1 · Beginner Countable noun
n. an instruction or law that tells you what you are allowed to do.
n. a prescribed guide for conduct or action, often established by an authority or through mutual agreement.
日本語:規則※
“The most important rule in the library is to keep your voice down.”
“The new safety rules were implemented immediately after the inspection revealed several significant hazards in the manufacturing plant.”
Synonyms
02government or control
B2 · Upper Intermediate Uncountable noun Law
n. the power or period of time that a person or group controls a country.
n. the exercise of authority or control over a territory or people; the period during which a particular leader governs.
日本語:統治※
“The country flourished under the rule of the new president.”
“Historians often debate whether the period of colonial rule provided any long-term infrastructure benefits to the local population.”
Synonyms
03a measuring tool
B1 · Intermediate Countable noun
n. a straight piece of wood or metal used for measuring or drawing straight lines.
n. a graduated strip of wood, metal, or plastic used for measuring length or as a guide for drawing straight lines.
“He used a steel rule to measure the length of the wooden board.”
“The carpenter checked the alignment with a folding rule before securing the final joint of the cabinet frame.”
Synonyms
04the usual way
B2 · Upper Intermediate Uncountable noun
n. what usually happens in a particular situation.
n. the normal or customary state of affairs; a general standard or practice.
“In this office, working late on Fridays is the rule rather than the exception.”
“While some students finish the course early, a four-year duration remains the rule for the majority of the cohort.”
Antonyms
05to govern
B1 · Intermediate
v. to have official power over a country or a group of people.
v. to exercise ultimate power or authority over an area and its inhabitants.
“The king ruled the land for over fifty years before his son took over.”
“The dynasty ruled the region for centuries, maintaining stability through a complex system of local alliances and military strength.”
06to make a legal decision
B2 · Upper Intermediate Law Formal
v. to make an official or legal decision about something.
v. to give an official or authoritative decision, especially in a court of law.
“The judge ruled that the evidence could not be used in the trial.”
“The Supreme Court ruled in favour of the plaintiff, citing a violation of constitutional rights that had been overlooked by the lower courts.”
07to be excellent
B1 · Intermediate Slang · Informal
v. to be very good or the best.
v. to be preeminent or excellent; used to express strong approval.
Español:molar
“This new pizza place really rules; the crust is perfect.”
“The fans started chanting that their team rules after the underdog scored the winning goal in the final minute.”
Antonyms
08to draw lines
C1 · Advanced Technical
v. to draw straight lines on paper using a ruler.
v. to mark a surface with straight parallel lines, typically as a guide for writing.
“She ruled the paper carefully before she started writing her calligraphy.”
“The ledger was ruled with red and blue ink to help the accountant distinguish between different types of financial entries.”
Collocations
Common phrases and expressions where native English speakers use the word “rule” in context.
Etymology
From Middle English reule, rewle, rule, borrowed from Old French riule, reule, from Latin regula (“straight stick, bar, ruler, pattern”), from regō (“to keep straight, direct, govern, rule”), ultimately from Proto-Indo-European h₃réǵeti (“to straighten; right”), from the root h₃reǵ-; see regent. Doublet of rail, regal, regula, and rigol.
From Middle English reulen, rulen, borrowed from Old French riuler, from Latin regulāre (“to regulate, rule”), from regula (“a rule”); see regular and regulate.
Related to revel.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
Related words
Idioms
01. as a rule
02. bright-line rule
03. golden rule
04. ground rule
05. rule in
06. rule of thumb
07. rule OK
08. rule out
09. rule the day
10. rule the roost
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A1 MoversIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.2.0–3.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 1.0–1.50–23TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.120–224
- Frequency
- Very common
- Level
- A1 · BeginnerOxford
- Updated
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QR code
englishreference.com/q/rule
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「日本語」「カタカナ語」 data: JMdict (EDRDG), CC BY-SA 4.0
Traducciones: Kaikki.org (Wiktionary), CC BY-SA 4.0