What does thief mean?
A thief is a person who takes property without the owner's permission, often doing so secretly or deceptively. The word is used in ordinary conversation, literature, news reports, and legal contexts, where the person responsible for stealing may be described as a thief. Its connotations depend on the circumstances: it can suggest a criminal who preys on others, but it may also identify someone caught in a minor or playful act of theft. In stories, a thief can be a dangerous antagonist or a sympathetic character, as in tales about clever thieves who outwit dishonest authorities. The word is especially useful when emphasis falls on the person responsible rather than on the broader act, which is called theft. Its simple plural, thieves, is irregular and is formed by changing the vowel rather than simply adding -s.
nounA person who steals property, especially in a secret or deceptive way.
- A person who steals property, especially in a secret or deceptive way.
"The thief slipped through the back door while the family was away."
"A thief took the bicycle from outside the shop."
"The story portrays the thief as a clever opponent of the dishonest merchant."
The regular plural is thieves, formed by changing the vowel and adding -s.
"The thieves left before the shop opened."
The word thief is an Old English survivor: modern speakers still use a name that traces back more than a thousand years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thief come from?
Thief descends from Old English þiof, a Germanic noun meaning a person who steals. It is related to cognates such as German Dieb and Dutch dief. The English family includes theft, thievery, thieve, and thievish, reflecting both the act of stealing and the person or quality associated with it.
Related word forms
How thief is actually used
The term is generally neutral and can be used in legal, literary, and everyday contexts. It often suggests stealth or deception, although it does not necessarily imply violence.
Easily confused with thief
Thief is a noun naming a person who steals, whereas thieve is a verb meaning to steal.