One Word Substitution: The Practice Set is a very important part of the English section of the SSC, CGL, and CHSL. In the current examination, the candidates are asked to make a word out of the provided letters. There are different levels of difficulty in the game. One Word Substitution app will help the users to improve their English skills and vocabulary. This application contains over 1000 important one-word substitutions, which can be very helpful for various competitive exams, like the SSC, CGL, SSC CHSL, UPSC, IAS, MBA, NDA, RRB, and others. The answers to the questions are also provided in this app.