rule
Meaning
an official instruction that says how things must be done or what is allowed, especially in a game, organization, or job
the government of a country or control of a group of people
to have official control over a country and its people
to make an official decision about something, especially a legal matter
Usage
The school has a strict rule against using mobile phones in class.
For many years, the country was ruled by a military dictatorship.
The judge ruled that the evidence was inadmissible.
Etymology
The word 'rule' entered English in the late 13th century from Old French 'riule', 'reule', which itself came from Latin 'regula', meaning a straight stick, bar, or pattern. This Latin term is derived from the verb 'regere', meaning 'to direct, guide, keep straight'. The core concept evolved from the literal idea of a straightedge used for measuring or drawing lines to a metaphorical standard for conduct or government. The Proto-Indo-European root reg-, meaning 'to move in a straight line', is the ultimate source, linking the modern abstract notions of control and regulation to the ancient, concrete idea of straightening or guiding.
Analysis
The word 'rule' is a simplex word derived from a single, indivisible root.