Definition of Indefinite Articles in English Grammar with Examples


Indefinite article is the exact opposite of definite article. Definite article points out a particular person or thing, whereas indefinite article does not refer to any particular person or thing of a group. Rather indefinite article is used to refer nonspecific noun that can be anything or anyone out of a group. 

In English grammar ‘a’ and ‘an’ are known as indefinite article. Indefinite article can only be used before singular countable nouns. 


  • He ate an apple. 
  • You should consult with a doctor. 
  • Are some suffering from a chronic illness? 
  • I took a short nap after working for hours. 
  • I will reach home in an hour. 
  • We were having an interesting discussion.
  • This is a serious matter. 
  • A tiger can run 40 miles per hour. 
  • She is a citizen of India. 
  • I want to pursue my M.A from a good university.