n.
     - the feeling of wanting to know about something or someone. 
▸a quality exciting curiosity or holding the attention:
 a tale full of interest.
  ▸a subject which one enjoys doing or studying.
 - money paid for the use of money lent, or for delaying the repayment of a debt.
 - the advantage or benefit of someone. 
▸archaic self-interest.
 - a share or involvement in an undertaking. 
▸a legal concern, title, or right in property.
 - a group having a common concern, especially in politics or business.
 
v.
  - excite the curiosity or attention of. 
▸
(interest someone in)
 persuade someone to undertake or acquire.
 - 
[as adj. interested]
 having an interest or involvement; not impartial:
 seeking views from interested parties.
 
 
  Phrase
  
    - at interest
 (of money borrowed) on the condition that interest is payable.  - declare an 
(or one's)
 interest
 make known one's financial interests in an undertaking before it is discussed.  - in the interests 
(or interest)
 of something
 for the benefit of. 
   
  Derivative
  
    - interestedly adv.
  - interestedness n.
 
   
  Etymology
  ME (orig. as interess ‘the possession of a share in or a right to something’): from Anglo-Norman Fr. interesse, from L. interesse ‘differ, be important’, from inter- ‘between’ + esse ‘be’; the -t was added by assoc. with OFr. interest ‘damage, loss’.