Definitions and samples

  • keen (adj.) sharp; eager; intense; sensitive


- He has a keen understanding of our economic system and knows how to create jobs.

  • jealous (adj.) feeling or showing envy of someone or their achievements and advantages


- Olivia is jealous of Sophie because she could never hit the notes that Sophie can.

  • tact (n.) ability to say the right thing


- A man of greater tact, however, could have managed these problems more smoothly.

  • oath (n.) a promise that something is true; a curse


- The President will take the oath of office tomorrow.

  • vacant (adj.) empty; not filled


- The number of vacant homes represents about one of every seven houses in Nevada.