Short Put Option means one is thinking that stock market will move down i.e. of bearish view. So, here Put Option will be purchased by paying the premium and thinking that share market will move down.
Example: At present Nifty is at 18972 as on 29th June 2023. Now, I am thinking that market will move dpwn so I will buy Nifty 19000 PE Put Option thinking that market will move downward by just paying the Premium. So, here my risk will be the premium amount which I paid at the time of purchase and my profit will be unlimited.