thief
noun /θiːf/
  /θiːf/
(plural thieves 
Idioms  /θiːvz/
  /θiːvz/
)- a person who steals something from another person or place
- a car/jewel thief
 - a gang of thieves
 - Thieves stole £70 000 worth of jewellery from his home.
 - a petty thief (= who steals items of quite low value)
 - It is the fourth time the shop has been targeted by thieves.
 
Collocations CrimeCrimeCommitting a crimesee also theft- commit a crime/a murder/a violent assault/a brutal killing/an armed robbery/fraud
 - be involved in terrorism/a suspected arson attack/people smuggling/human trafficking
 - engage/participate in criminal activity/illegal practices/acts of mindless vandalism
 - steal somebody’s wallet/purse/(British English) mobile phone/(North American English) cell phone
 - rob a bank/a person/a tourist
 - break into/ (British English) burgle/ (North American English) burglarize a house/a home/an apartment
 - hijack a plane/ship/bus
 - smuggle drugs/weapons/arms/immigrants
 - launder drug money (through something)
 - forge documents/certificates/passports
 - take/accept/pay somebody/offer (somebody) a bribe
 - run a phishing/an email/an internet scam
 
- combat/fight crime/terrorism/corruption/drug trafficking
 - prevent/stop credit-card fraud/child abuse/software piracy
 - deter/stop criminals/burglars/thieves/shoplifters/vandals
 - reduce/tackle/crack down on knife/gun/violent/street crime; (especially British English) antisocial behaviour
 - foil a bank raid/a terrorist plot
 - help/support/protect the victims of crime
 
- report a crime/a theft/a rape/an attack/(especially British English) an incident to the police
 - witness the crime/attack/murder/incident
 - investigate a murder/(especially North American English) a homicide/a burglary/a robbery/the alleged incident
 - conduct/launch/pursue an investigation (into…); (especially British English) a police/murder inquiry
 - investigate/reopen a criminal/murder case
 - examine/investigate/find fingerprints at the crime scene/the scene of crime
 - collect/gather forensic evidence
 - uncover new evidence/a fraud/a scam/a plot/a conspiracy/political corruption/a cache of weapons
 - describe/identify a suspect/the culprit/the perpetrator/the assailant/the attacker
 - question/interrogate a suspect/witness
 - solve/crack the case
 
Extra ExamplesTopics Crime and punishmenta2- A thief snatched her handbag containing her wages.
 - The alarm is usually sufficient to deter a would-be thief.
 - The thief struck while the family were out.
 
Oxford Collocations Dictionaryadjective- would-be
 - common
 - petty
 - …
 
- gang
 
- catch
 
- snatch something
 - steal something
 - take something
 - …
 
Word OriginOld English thīof, thēof, of Germanic origin; related to Dutch dief and German Dieb, also to theft. 
Idioms 
(there is) honour among thieves 
- (saying) used to say that even criminals have standards of behaviour that they respect                                     
 
(as) thick as thieves 
- (informal) (of two or more people) very friendly, especially in a way that makes other people suspect that something wrong, illegal or dishonest is involved in the situation