dangerous

a little knowledge is a dangerous thing

proverb Having a precursory or limited amount of knowledge about something can make one overestimate how well they will be able to do something much larger in scope or scale. Just because she painted her room by herself, now she thinks she can do the entire house—inside and out! A little knowledge is a dangerous thing, I tell you.
See also: dangerous, knowledge, little, thing

a little learning is a dangerous thing

proverb Having a precursory or limited amount of learning about something can make one overestimate how well they will be able to do something much larger in scope or scale. Just because she painted her room by herself, now she thinks she can do the entire house—inside and out! A little learning is a dangerous thing, I tell you.
See also: dangerous, learning, little, thing

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

dangerous ground

A topic or opinion 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

diseases of the soul are more dangerous than those of the body

proverb Mental and emotional pain is more painful and more difficult to treat than a physical ailment. The quote is attributed to Marcus Tullius Cicero, a Roman statesman and philosopher. Therapists and psychiatrists are vitally important to our society. Diseases of the soul are more dangerous than those of the body, after all.
See also: body, dangerous, disease, more, of, soul, those

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: dangerously, live

on dangerous ground

In a position that poses danger to oneself or 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

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
Farlex Dictionary of Idioms.

*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.
See also: dangerous, knowledge, little, 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
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

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.
See also: dangerous, knowledge, little

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: dangerously, live
The American Heritage® Dictionary of Idioms by Christine Ammer.

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
Farlex Partner Idioms Dictionary

little learning is a dangerous thing, a

Knowing a little may make one mistakenly assume that one knows everything. This expression is a direct quotation from Alexander Pope’s Essay on Criticism (1709), which echoed a sentiment stated in the sixteenth century by the French essayist Montaigne.
See also: dangerous, learning, little
The Dictionary of Clichés by Christine Ammer
See also:
  • a little knowledge is a dangerous thing
  • a little learning is a dangerous thing
  • a bird in hand
  • a bird in the hand
  • a straw will show which way the wind blows
  • a/the feel of (something)
  • a bird in the hand is worth two in the bush
  • a slew of (something)
  • (one) could use (something)
  • a slue of (something)
References in periodicals archive
This was 2,800 less than the most dangerous region, London, but almost 600 more than the statistically safest region, the North East.
Aside from Guiuan, 17 other areas in the country also reported dangerous heat index levels.
The teaser posted on Instagram shows Grande lying down, saying: "I'm so excited to bring you into the world of the Dangerous Woman Diaries."
Robert Ace Barbers said the bill amends the 27 sections of Republic Act 9165, as amended, otherwise known as the "Comprehensive Dangerous Drugs Act of 2002."
Sources informed Pakistan Today that as the properties inside the walled city were closely knitted, the demolition of one property affected the foundations and structure of the entire neighbourhood and therefore it was important to take up the restoration of the dangerous buildings as they were also a threat to the people's life.
Analysis of the latest open crime data from the Home Office has revealed that in 2017, there were 161 dangerous driving offences recorded in the region.
Analysis of the latest open crime data from the Home Office has revealed that in 2017, there were 56 dangerous driving offences recorded by Cleveland Police.
WEST Midlands Police is to bolster its dangerous dog unit after a 12 per cent increase in attacks last year.
Moscow, Russia, March 29, 2018 --(PR.com)-- There are certified experts that know the peculiarities of dangerous cargo handling at ACEX Group.
The EU has an effective system in place to help keep consumers safe from dangerous products.
Many states--including Missouri--have provisions that provide greater punishment for some felonies that are committed with, or by the use of, a "deadly weapon" or "dangerous instrument." (1) The definition of "deadly weapon" tends to be pretty straightforward, usually a list that includes several specific items that just are deadly weapons, such as guns and knives.
A lorry driver has been found guilty of causing death by dangerous driving after a motorway crash which killed eight people and seriously injured four.
The number of road accidents involving vehicles carrying dangerous cargo has increased by 83.3% in 2 years, according to the Main Road Safety Department said.
RAWALPINDI -- The Rawalpindi Development Authority (RDA) on Saturday issued notices to 19 dangerous structures in the city asking for them to be repaired, while the owners of 10 dangerous buildings were asked to demolish their structures immediately.