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armed and dangerous

Possessing a weapon and likely to use it. Typically said of criminals, especially fugitives. The most wanted fugitives on this list are all considered armed and dangerous.
See also: and, arm, dangerous

on shaky ground

Questionable or lacking support, as of an idea. His hypothesis has been on shaky ground to since the beginning, so I'm not surprised that he couldn't prove it in the lab.
See also: ground, on, shaky

live dangerously

To lead a lifestyle characterized by taking risks. Sometimes used humorously to refer to a very mildly risky action. Most of the guys I know who live dangerously eventually get tired of life in the fast lane and end up settling down. A: "Extra hot sauce?" B: "Yeah, I like to live dangerously."
See also: live

on dangerous ground

In a position that poses danger to onself e or that is likely to upset or offend others. I may be on dangerous ground with this opinion, but, as a mother myself, I really don't think women should breastfeed in public. You're on dangerous ground as long as you continue to antagonize him—I've seen him become violent.
See also: dangerous, ground, on

dangerous ground

A topic or thing that is likely to upset or offend others. I may be on dangerous ground with this opinion, but, as a mother myself, I really don't think women should breastfeed in public.
See also: dangerous, ground

*armed and dangerous

Cliché [of someone who is suspected of a crime] having a gun or other lethal weapon and not being reluctant to use it. (This is part of a warning to police officers who might try to capture an armed suspect. *Typically: be ~; be regarded as ~; be presumed to be ~.) The murderer is at large, presumed to be armed and dangerous. The suspect has killed once and is armed and dangerous.
See also: and, arm, dangerous

little knowledge is a dangerous thing

 and little learning is a dangerous thing
Prov. Cliché If you only know a little about something, you may feel you are qualified to make judgments when, in fact, you are not. After Bill read one book on the history of Venezuela, he felt he was an authority on the subject, but he wound up looking like a fool in discussions with people who knew a lot more about it than he did. A little learning is a dangerous thing.

on shaky ground

 and on dangerous ground
Fig. [of an idea or proposal] on an unstable or questionable foundation; [of an idea or proposal] founded on a risky premise. When you suggest that we are to blame, you are on shaky ground. There is no evidence that we are at fault. The case for relying solely on nuclear energy seems to be on dangerous ground.
See also: ground, on, shaky

little knowledge is a dangerous thing, a

Also, a little learning is a dangerous thing. Knowing a little about something tempts one to overestimate one's abilities. For example, I know you've assembled furniture, but that doesn't mean you can build an entire wall system; remember, a little knowledge . This maxim, originally a line from Alexander Pope's An Essay on Criticism (1709), has been repeated with slight variations ever since. It is still heard, although less frequently, and sometimes shortened, as in the example.

live dangerously

Take numerous risks, be daring, as in Bill never knows if he'll have enough money to pay the next month's rent-he likes to live dangerously . This expression figured in the work of such 19th-century German writers as Nietzsche, who regarded it as an admirable course of action. Today it is often used with mildly humorous effect, as in the example. [c. 1900]
See also: live

dangerous ˈground

a situation or subject that is likely to make somebody angry, or that involves risk: We’d be on dangerous ground if we asked about race or religion.
See also: dangerous, ground
References in periodicals archive ?
Part II reviews current state statutes and trends relating to civil commitment, including dangerousness and gravely disabled grounds.
65) A future dangerousness review in criminal law looks to past conduct (alleged or otherwise) rather than status to determine whether an individual poses a future risk of harmful or obstructing conduct--uncontrollable violent or sexual behavior, a flight risk, etc.
This puts officers at a disadvantage from the beginning of the encounter and greatly increases it when they judge dangerousness based on the erroneous belief that offender risk is displayed by physical characteristics.
The court acknowledged that the Washington Supreme Court had concluded that when an offender is released into the community and is later incarcerated for a nonsexually violent offense, (1) the offender cannot necessarily be said to be currently dangerous as required for SVP commitment, (2) due process requires that the offender's current dangerousness be demonstrated by a recent overt act, and (3) a "recent overt act" is "any act that has either caused harm of a sexually violent nature or creates a reasonable apprehension of such harm.
Second, it emphasizes that evaluations of both decisional capacity and dangerousness (both defined later) are crucial to determining the appropriate response to treatment refusal.
Attorney Gottstein said that to confine someone to a mental hospital there must be an "opinion" of potential dangerousness and the "label" of a mental disorder.
3) Responding to this continued demand, researchers have attempted to improve the accuracy of their predictions of future dangerousness by developing actuarial instruments to assess the risk of repeated violence in offenders and psychiatric patients by examining a number of factors, scored on a scale with points varying according to the particular instrument.
30) In Jones, Justice Powell observed that PIAC is intended to "treat the individual's mental illness and protect him and society from his potential dangerousness.
Using data from the MacArthur Mental Health Module contained in the 1996 General Social Survey (N = 1,444), the authors examined the impact of political ideology, attributions about the cause of mental illness, and perceptions of dangerousness in determining public support for legally mandated mental health treatment.
Civil commitment does not require dangerousness to others; dangerousness to oneself will do.
Combat deaths are seen as a measure of the magnitude and dangerousness of war, just as murder rates are seen as a measure of the magnitude and dangerousness of violence in our communities.
Standing naked against a wintry landscape, the figure became a screen for the projection of identities--beast, bigfoot, manimal, specter, even, to use a word Newkirk's work encourages one to use in all its dangerousness, spook.
After a brief description of the data, we explore four areas of interest: how Virginia capital jurors feel about the death penalty in general; how well they understand the legal rules designed to guide their sentencing decision; how, if at all, their beliefs about the defendant's future dangerousness influence their deliberations and sentencing decision; and how they allocate responsibility for the defendant's fate, as between themselves and other legal actors, and as between themselves and the defendant.
Youth homelessness increased rapidly during the late 1980s and early 1990s, at a time when street homelessness in particular became increasingly associated in the popular mind with dangerousness and criminality.
Four justices, led by Justice Harry Blackmun, found that when the defendant's future dangerousness is an issue, due process requires that the jury be informed of the defendant's parole ineligibility.