Definition of ruler in English:

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Pronunciation: /ˈro͞olər/


1A person exercising government or dominion.
Example sentences
  • Luanda on the Angola coast was a Portuguese town from which they tried to exercise control over African rulers inland.
  • Hence the exercise of the ruler's authority could be decisive in determining the outcome of local rivalries.
  • In February workers overthrew the dictatorial ruler, the Tsar.
leader, sovereign, monarch, potentate, king, queen, emperor, empress, prince, princess;
crowned head, head of state, president, premier, governor;
overlord, chief, chieftain, lord;
dictator, autocrat
1.1 Astrology another term for ruling planet.
Example sentences
  • Your planetary ruler, Saturn, squares the Virgo Moon on Thursday.
  • As a Pisces, your planetary ruler is Neptune, god of the oceans.
  • Your planetary ruler Venus is in a tricky and variable mood right now.
2A straight strip or cylinder of plastic, wood, metal, or other rigid material, typically marked at regular intervals, to draw straight lines or measure distances.
Example sentences
  • I then showed them how to use a white pencil to trace circles of various sizes and straight lines with rulers.
  • Using the metal ruler as a straight edge cut 10 1-inch right triangles with the craft knife.
  • The size of swelling and redness were measured with a plastic ruler, while the child's reaction to movement of the limb or to touch of the site was graded with a standard scale.



Pronunciation: /ˈro͞olərˌSHip/
Example sentences
  • I believe she was still fighting at the last, possibly to retain her rulership and to pass that on to her son.
  • Plato later built on this idea in The Republic to argue that rulership was a skill like any other, and that therefore we should be governed by experts.
  • Apart from the Sun and Moon each planet has two rulerships - one diurnal, one nocturnal - to recognise their expression in these altered states.

Words that rhyme with ruler

chermoula, cooler, hula, moolah, Petula, Shula, Tallulah, Tula

For editors and proofreaders

Syllabification: rul·er

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