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Related to necessary: Necessary and sufficient

necessary evil

Something bad that must exist or occur in order for something good to happen. These days, student loans are a necessary evil in order to get an education that leads to a well-paying job. Some view dictators as a necessary evil who keep the region stable by suppressing more radical elements.
See also: evil, necessary

deem it necessary

To determine that something is necessary. I didn't deem it necessary to give the boys detention because having their shirts untucked isn't a very serious infraction.
See also: necessary

deem it (to be) necessary

 and deem that it is necessary
to decide that something is necessary. Mary deemed that it was necessary to leave town that night. Lisa deemed it necessary to go home.
See also: necessary

If God did not exist, it would be necessary to invent Him.

Prov. People need a deity to worship. (This is an English translation of a quote from Voltaire. It is often parodied, using a person's name instead of God and implying that the person is somehow necessary.) The atheist tried to convince Jerry that God does not exist, and that people should not waste their time worshiping Him. "But you can't stop people from worshiping God," Jerry replied. "If God did not exist, it would be necessary to invent Him." The unscrupulous mayor was such a convenient scapegoat for the city's problems that if she had not existed, it would have been necessary to invent her.
See also: did, god, if, invent, necessary, not

a necessary evil

COMMON If you describe something as a necessary evil, you mean that although it is unpleasant, it is needed. He viewed war as a necessary evil. Managers sometimes think that training is a necessary evil that has to be done but is too expensive.
See also: evil, necessary

a necessary evil

something that is undesirable but must be accepted.
1997 Internet World Advertising may be a necessary evil. After all, someone has to support Internet ventures.
See also: evil, necessary

a ˌnecessary ˈevil

a thing that is unpleasant or even harmful, but which must be accepted because it brings some benefit: Injections against tropical illnesses are a necessary evil when you are planning to travel to that part of the world.I suppose all these security measures are a necessary evil.
See also: evil, necessary

the necessary

n. money; an income. (Also a really old term for a toilet or bathroom.) I can always use more of the necessary.
See also: necessary
References in periodicals archive ?
As used by the Navy, the process results in a list of the KSAs associated with each enlisted job, allowing us to determine what our sailors are capable of doing and what training is necessary for them to work on the various platforms or in various jobs.
Most necessary reform: I'm less interested in the label put on a reform and more interested in getting the framework for evaluation right.
Bank and its parent have committed to make available to the Board such information on the operations of Bank and any of its affiliates as the Board deems necessary to determine and enforce compliance with the IBA, the Bank Holding Company Act of 1956, as amended, and other applicable federal law.
When more extensive investigation is necessary, we often schedule our patients to undergo bronchoscopy in the operating room or we refer them to a pulmonologist for bronchoscopy under sedation.
Agencies also must ensure that they possess the necessary personnel to manage the accreditation process.
If necessary, it may be feasible to get some idea of the comparability of measurement results of any given method with others obtained elsewhere by measuring certified reference materials or by comparing the method against one for which the validation has been carried out.
Niche producers will require their engineering partner to have the process skills necessary to understand the uniqueness of their products and be able to adapt equipment and processes as needed.
212 activity (in addition to being ordinary, necessary, etc.
To determine the information necessary to answer these questions, we contracted for the U.
If Game 7 is necessary for the Mighty Ducks, it's necessary that it doesn't look at all like Game 5.
Aquinas is able to show that, since at least one being exists, there is at least one necessary being, one being which must exist.
The underwriter can access this information and request more as necessary and provide approval process status via the collaboration site.
Two of the more pertinent questions are: Is distance learning necessary and is distance learning as effective an instructional delivery method as the traditional classroom lecture method of instruction.
A high index of suspicion is necessary to make the diagnosis.