covert

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++cov·ert1 /ˈkʌvət, ˈkəʊvɜːt $ ˈkoʊvərt/ adjective  SECRETsecret or hidden 秘密的；隐藏的 OPP overt covert operations 秘密行动► see thesaurus at secret

Examples from the Corpus

covert• Usually it is covert and can only be diagnosed by specifically measuring blood lipids.• The chief investigator resigned, amid allegations of covert and probably illegal operations.• A covert investigation was conducted to catch the drug-smuggling ring.• But the media are not Rasputin with a covert or overt political agenda.• Controlled studies to date of the effectiveness of covert sensitization offer mixed results.• Because of the substantial practical advantages, the bulk of this chapter will be devoted to covert sensitization.• In my own research, some covert use was made of a micro-recorder and tapes were later transcribed.• The abuse of residents in the home was confirmed by covert video surveillance.

Related topics: Plants

covert2 noun [countable]  HBPa group of thick bushes where animals can hide 〔动物藏身的〕树丛

Examples from the Corpus

covert• Red of juvenile, both on crown and under tail coverts, is rather pale.• White eyestripe and under tail coverts.• Like a miniature short-billed Water Rail, with unspotted underparts, barred under tail coverts and green bill.• Lack of red on under tail coverts distinguishes from all other black and white woodpeckers, except Three-toed.• The only waterfowl with both red forehead and habit of constantly flirting white under tail coverts.• Plumage grey-brown, darker on underparts, with white under tail coverts.• He was helped by Athena to drive them out of their coverts, and as they flew up he shot them.Origin covert1 (1200-1300) Old French past participle of covrir; → COVER1

cov·ert1 adjectivecovert2 nounChineseSyllable  

hidden Corpus secret or

covert

I

cov‧ert¹ /ˈkʌvət, ˈkəʊvɜːt $ ˈkoʊvərt/ adjectivesecret or hidden
   OPP  overt:
    covert operations
     

THESAURUS

   ▪ secret known about by only a few people, who have agreed not to tell anyone else: a secret meeting place | The details of the proposal must remain secret.
   ▪ confidential used about information, especially in business or government, that is secret and not intended to be shown or told to other people: a highly confidential report | Employees’ personal details are treated as strictly confidential.
   ▪ classified used about information that the government has ordered to be kept secret from most people: He was accused of passing on classified information to the Russians in the 1950s.
   ▪ sensitive used about information that is kept secret because there would be problems if the wrong people knew it: A teenager managed to hack into sensitive US Air Force files.
   ▪ covert [only before noun] used about things that are done secretly, especially by a government or official organization: a CIA covert operation
   ▪ undercover [usually before noun] used about things that are done secretly by the police in order to catch criminals or find out information: Detectives arrested the suspect after a five-day undercover operation.
   ▪ underground an underground organization or newspaper is one that operates or is produced secretly and opposes the government: Her father was a member of the underground resistance movement in France during World War II.
   ▪ clandestine /klænˈdestən, klænˈdestɪn/ secret and often illegal or immoral: clandestine meetings | his involvement in a clandestine operation to sell arms to Iran | a clandestine love affair
   ▪ hush-hush informal used about information or activities that are kept officially secret: He was put in charge of some hush-hush military project. | I’ve no idea what he does – it’s all very hush-hush.

II

covert² noun [countable]
a group of thick bushes where animals can hide