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have it on good authority

To know certain information from a reliable source. I have it on good authority that Mom will take us out for ice cream if you finish your vegetables. Once that witness's story was verified, we had it on good authority that the man we'd arrested had in fact committed the crime.
See also: authority, good, have, on

throw (oneself) on/at the mercy of (someone)

To plead with someone, especially a figure of authority, to show one lenience and mercy. I have no excuse for what I did. I can only throw myself on the mercy of the duke and beg for his forgiveness. She threw herself at the mercy of the court, saying that her dependence on drugs led her to commit those crimes.
See also: mercy, of, on, throw

carry (a lot of) weight (with someone or something)

Fig. to be very influential with someone or some group of people. Your argument does not carry a lot of weight with me. The senator's testimony carried a lot of weight with the council.
See also: carry, weight

carry one's (own) weight

 and pull one's (own) weight
Fig. to do one's share; to earn one's keep. (The weight is the burden that is the responsibility of someone.) Tom, you must be more helpful around the house. We each have to carry our own weight. Bill, I'm afraid that you can't work here anymore. You just haven't been carrying your weight.
See also: carry, weight

carry weight (with someone)

Fig. to have influence with someone; [for an explanation] to amount to a good argument to use with someone. That carries a lot of weight with the older folks. What you say carries no weight with me.
See also: carry, weight

throw oneself at the mercy of some authority

 and throw oneself on the mercy of some authority; throw oneself (up)on someone's mercy
Fig. to seek mercy from a court of law, especially at one's sentencing for a crime; to seek help from an official or institution. He pleaded guilty and threw himself at the mercy of the court. It did no good to throw myself on the mercy of the State Department. Please don't! I throw myself upon your mercy!
See also: authority, mercy, of, throw

carry weight

Also, carry authority or conviction . Exert influence, authority, or persuasion, as in No matter what the President says, his words always carry weight. Shakespeare combined two of these expressions in Henry VIII (3:2): "Words cannot carry authority so weighty." [c. 1600]
See also: carry, weight

have something on good authority

If you have something on good authority, you believe it is true because you trust the person who told you about it. I have it on good authority that there's no way this light can cause skin cancer. Note: This expression can be varied, for example by using get or be told instead of have. I'm told on good authority that you will be successful in your examinations.

carry weight

COMMON If a person or their opinion carries weight, they are respected and are able to influence people. Not only do men talk more, but what they say often carries more weight. El Tiempo is Colombia's leading newspaper and its opinions carry considerable weight in the country.
See also: carry, weight

have something on good authority

have ascertained something from a reliable source.

carry weight

be influential or important.
See also: carry, weight

have something on good auˈthority

be able to believe something because you trust the person who gave you the information: I have it on good authority that the chairman is going to resign.

carry ˈweight

be important or able to influence somebody: His opinions carry very little weight with his manager.
See also: carry, weight

carry weight

See also: carry, weight
References in periodicals archive ?
In most states, the public health authorities already have a broad range of powers to identify, contain and require the reporting of disease.
It is also important that these authorities be clarified now, prior to a disaster.
The act represents an attempt to modernize public health authorities to address a public health emergency.
These bonds were designed to be attractive to foreign monetary authorities as an alternative to converting dollars into gold.
The United States was concerned that if the market price were allowed to rise appreciably above the official price, foreign monetary authorities would convert their dollar holdings into gold at the official price in order to profit by later reselling the gold at the higher market price.
monetary authorities hold gold equal to 25 percent of the value of domestic currency as backing for the currency.
That demand had been met through the early 1960s by a buildup of official claims on the United States as foreign monetary authorities intervened to maintain the value of their currencies against the dollar.
5) "Reasonable basis" and "substantial authority" require reliance on a similar list of authorities.
Under the proposed rules, the reasonableness of a disclosed return position is to be tested under the same types of authorities as contained in the definition of "substantial authority.
The difference between "reasonable basis" and "substantial authority" is that the former does not require a weighing of the supporting and contrary authorities.
91-23 provides that, as a condition to receiving Competent Authority assistance, a taxpayer must concede that it is not entitled to participate in the negotiations between competent authorities.
TEI believes that the competent authorities should be permitted to "roll over" settlements to subsequent years.
We recognize that taxpayers must take reasonable actions to ensure that an adjustment ultimately agreed upon by the competent authorities will not be barred.