One word Substitution:- 'One word Substitution' is one of the essential parts of vocabulary. It is asked in various competitive exams.
It simply means that a sentence is replaced with a single word. One requires a good vocabulary to solve the questions.
Ex:- The life history of a person written by himself can be substituted with 'autobiography'.
Some Commonly Used One Word Substitutions:-
Agenda:- a list of headings of the business to be transacted at a meeting
Atheist:- a person who does not believe in God
Audience:- a number of people listening to a lecture
Biennial:- an event which happens once in 2 years
Bouquet:- a collection of flowers
Carnivorous:- one who lives on flesh
Curator:- a person in charge of a museum
Edible:- fit to be eaten
Fatal:- causing death