That rules; predominant; chief; reigning; controlling.

An order or a decision on a point of law from someone in authority.

present participle and gerund of rule

present participle of rule on

plural of ruling

The rules are certain and cannot be ignored or worked around.

(slang, nonstandard) Alternative form of rules are rules

simple past tense and past participle of rule on

Third-person singular simple present indicative form of rule on

Based on rules.