Focus on the pronunciation of substitute
English definition of “substitute”
substitute noun [C]
› something different or new that is used instead of another thing: (as) a substitute for sth We are looking at the possibility of using foreign production as a substitute for exports to foreign markets.cheap/good/poor substitutes Cheaper substitutes displaced the product from the world market. egg/fat/meat substitutes Early warning of a layoff is no substitute for a job.
there's no substitute for sth/doing sth › nothing else is as good as the stated thing or action: In this industry, there's no substitute for experience.