As a Noun: 1. The desire to want to learn or hear more about something. English = interest. 2. A very strong interest in something. English = fascination. As a Verb or Adjective: 1. To want to learn or hear more about something. English = (be) interested. 2. To attract or hold your attention, for example because you think something is exciting or unusual. English = (be) interesting. 3. To want very much to learn or hear more about something. English = (be) fascinated. 4. To attract very strongly or hold very tightly your attention, because you think it is very interesting. English = (be) fascinating.