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rule in

To decide definitively that something will or can possibly happen. (Used especially—and somewhat redundantly—in the phrase "not ruled in or ruled out.") Look, nothing has been ruled in or ruled out at this stage, so we just have to wait until the doctors have more information to work with. We'll neither rule in nor rule out the possibility of a shakeup in management if this branch's profits continue to fall.
See also: rule

rule OK

To be the best; to be the most dominant or in control; to be the most favoured or supported by the public. (Used originally in relation to football clubs or local gangs in graffiti writing.) Primarily heard in UK. Someone had come with a can of black spray paint and crossed out the big "Leeds Rules OK" that was painted on the side of the school. But in this part of the country, the conservatives rule OK with almost no opposition.
See also: OK, rule

rule with a rod of iron

To rule, govern, or control a group or population with complete power over all aspects of life, work, etc. He rules with a rod of iron, and moves swiftly to gain control over any entity that is not already in his grasp. She has ruled this company with a rod of iron for three decades, and it's going to be difficult for her to let go of control.
See also: iron, of, rod, rule

rule out

To eliminate, prevent, preclude, or cancel someone or something as a possibility. They ruled Jim out when they were considering a replacement manager due to his tendency to show up late. I guess that rules out our trip to Portugal this summer.
See also: out, rule

rule the roost

To be the real boss; to be the person in charge. You just need to accept that your daughter is going to rule the roost for most of her childhood. For all intents and purposes, it's the assistant manager who rules the roost.
See also: roost, rule

divide and rule

To gain or maintain power by encouraging tension among underlings so that they cannot unite in opposition. Rachel is so popular because she divides and rules all of her minions and makes sure they all dislike each other.
See also: and, divide, rule

rule against (someone or something)

To issue a judgment that goes against someone's or something's case. The judge ruled against the father, stating that he had not shown adequate reason to have sole custody of the children.
See also: rule

rule for (someone or something)

To issue a judgment that is in someone's or something's favor. The court ruled for the local company, siding with its complaint that the multinational corporation infringed on its copyrighted patents.
See also: rule

rule over (someone or something)

To exercise absolute authority or control over someone or something. The dictator rules over the region with an iron fist. He had visions of ruling over the company when he took the promotion, but he actually had very little power in running the day-to-day operations.
See also: over, rule

rule someone or something out

to prevent, disqualify, overrule, or cancel someone or something. John's bad temper rules him out for the job. The rainy weather ruled out a picnic for the weekend.
See also: out, rule

rule the roost

Fig. to be the boss or manager, especially at home. Who rules the roost at your house? Our new office manager really rules the roost.
See also: roost, rule

rule out

1. Eliminate from consideration, exclude, as in The option of starting over again has been ruled out. [Second half of 1800s]
2. Prevent, make impossible, as in The snowstorm ruled out our weekly rehearsal. [First half of 1900s]
See also: out, rule

rule the roost

Be in charge, boss others, as in In our division the chairman's son rules the roost. This expression originated in the 15th century as rule the roast, which was either a corruption of rooster or alluded to the person who was in charge of the roast and thus ran the kitchen. In the barnyard a rooster decides which hen should roost near him. Both interpretations persisted for 200 years. Thomas Heywood (c. 1630) put it as "Her that ruled the roast in the kitchen," but Shakespeare had it in 2 Henry VI (1:1): "The new-made duke that rules the roast," which is more ambiguous. In the mid-1700s roost began to compete with roast, and in the 1900s roost displaced roast altogether. Also see run the show.
See also: roost, rule

rule the roost

1. If someone rules the roost, they are the most powerful and important person in a group. In Germany, scientists will be found at the top of many manufacturing companies; in Britain, accountants rule the roost. Unfortunately he's a weak manager who lets the players rule the roost when he's meant to be in charge.
2. If something rules the roost it is more powerful or popular than the things that it is being compared to. Today, the cartels still rule the roost and the authorities seem as impotent as ever. Note: This expression seems to refer to the dominant cock in a chicken coop. However, `rule the roost' may have developed from the earlier expression `rule the roast', which refers to the head of the household who carves and serves the meat.
See also: roost, rule

divide and rule (or conquer)

the policy of maintaining supremacy over your opponents by encouraging dissent between them, thereby preventing them from uniting against you.
This is a maxim associated with a number of rulers, and is found in Latin as divide et impera and in German as entzwei und gebiete . Since the early 17th century, English writers have often wrongly attributed it to the Italian political philosopher Niccolò Machiavelli ( 1469–1527 ).
See also: and, divide, rule

rule the roost

be in complete control.
The original expression was rule the roast , which was common from the mid 16th century onwards. Although none of the early examples of its use shed any light on its source, we can surmise that it originally referred to someone being the most important person at a banquet or feast. Rule the roost, found from the mid 18th century, has now replaced the earlier version.
See also: roost, rule

diˌvide and ˈrule

keep control over people by making them disagree with and fight each other, therefore not giving them the chance to unite and oppose you together: a policy of divide and rule
See also: and, divide, rule

rule the ˈroost

(informal) be the person who controls a group, family, community, etc: It is a family firm, where the owner’s mother rules the roost.
A roost is a place where birds sleep.
See also: roost, rule

rule out

1. To prevent or preclude something: The snowstorm ruled out their weekly meeting. Our lack of funds ruled the vacation plans out.
2. To eliminate something from consideration; exclude something: The referee has ruled out the option of starting over. I wanted to drop the course, but school policy ruled that option out.
3. To draw a line or lines through something to delete or obscure it; cross something out: The copyeditors ruled out all of our mistakes on the manuscript.
See also: out, rule

rule the roost

To be in charge; dominate: In this house my parents rule the roost.
See also: roost, rule
References in periodicals archive ?
Another installment sales planning opportunity was illustrated in Letter Ruling 200603017.
2) immediate review of the ruling may materially advance the ultimate termination of the proceeding;
This is a very sweeping ruling," said Americans United Legal Director Steven K.
The IRS concluded that the business was a corporation for income tax purposes, even though its status was terminated by the state; thus, it would treat the company's S election as timely if filed within 60 days of the ruling.
Requests that are not withdrawn will be processed in accordance with applicable procedures governing tentatively adverse rulings.
The Court of Federal Claims said the taxpayer conceded revenue ruling 90-105 was a correct interpretation of the law.
Although Correll elevates longstanding rulings that have Congressional approval to some type of legal status on par with statutes, the average revenue ruling does not fall into that category.
The IRS issued revenue ruling 94-47 (1994-2 CB 18) on July 18, 1994, in an attempt to clarify under what circumstances daily transportation expenses between a taxpayer's residence and a work location were deductible under section 162(a).
The Service granted these entities relief and allowed S status from inception, as long as the entity filed both forms within 60 days of the ruling.
According to the Tax Court, a revenue ruling represents the Commissioner's position with respect to a specific factual situation and is merely the opinion of a lawyer in the agency.
For example, assume X and Y apply for and receive a private letter ruling allowing them to enter into a tax-free reorganization to form a parent-subsidiary group.
The Institute explains that the Correll case actually involved a regulation, although the presence of an earlier revenue ruling is noted in a footnote in the decision to demonstrate its longstanding nature.
A taxpayer taking a position that is contrary to a revenue ruling, however, has not disregarded the ruling if the position has a realistic possibility of being sustained on its merits.
2003-43, (44) which grants S corporations a 24-month extension to file Form 2553 without obtaining a letter ruling and, thus, allows them to avoid user and professional fees.
Two days before Christmas, the Internal Revenue Service issued a ruling on the treatment of training expenses.