Is 'Perilous' a Commonly Used Word?

Yes, the word 'perilous' is more commonly used compared to 'parlous.' It is an adjective that means full of danger or involving great risk. 'Perilous' is regularly used in both spoken and written English to describe situations, circumstances, or activities that are potentially hazardous or fraught with risk. It is a more familiar term and can be found in various contexts, including news reports, literature, and everyday conversations.