thiefnoun [ C ]uk /θiːf/ us /θiːf/ plural thieves
- The thief had disturbed the documents in her filing cabinet, but nothing had been taken.
- The diamond thief double-crossed his partners and gave them only worthless fake jewels.
- It's said that a barking dog puts off the opportunist thief.
- The police believe he is the thief, but all the evidence suggests otherwise .
- The thief broke into the office while his accomplice stalled off the security guard.