interest

UK: ˈɪntrəst | US: ˈɪntrɪst

Definition
  1. n. 1. A feeling of curiosity or concern about something.

  2. n. 2. Money paid regularly for the use of borrowed funds.

  3. vt. 3. To engage the attention or curiosity of someone.

Structure
inter <between>est <to be>
Etymology

interest = inter<between> + est<to be>

  • inter (Latin: "between, among") → Implies involvement or connection.
  • est (Latin: "to be," from esse) → Suggests existence or state.

Etymology Origin:
The word "interest" originates from Latin interesse ("to be between, to concern"), combining inter- (between) and esse (to be). Initially, it referred to compensation for loss (legal/financial context), later expanding to mean "curiosity" or "stake in something." The dual meanings—financial and emotional—reflect its logical progression from tangible (money) to abstract (attention).

Examples
  1. She has a keen interest in ancient history.

  2. The bank charges 5% interest on loans.

  3. This book might interest you.

  4. His speech sparked widespread public interest.

  5. They invested the money to earn interest over time.