Thievishness refers to the act of being dishonest and stealing items that belong to someone else. Synonyms for thievishness include stealing, pilfering, shoplifting, robbery, burglary, and larceny. These words all describe actions that involve taking something that is not rightfully one's own. Other synonyms for thievishness include sneaky, deceptive, and underhanded. These words describe the deceitful behavior that often accompanies acts of theft. Additionally, words such as greed, avarice, and covetousness can be considered synonyms for thievishness, as they describe an intense desire to acquire material possessions, regardless of whether or not they belong to the individual in question.