profound /prəˈfaund/ adj. 1. 深遂的，很深的：a profound silence 深沉的静寂；the profound depths of the ocean 海洋的最深处 2.深奥的，渊博的，深远的：profound knowledge 渊博的学识；a profound theory 深奥的道理［考句］Young people’s social environment has a profound effect on their academic progress.社会环境对于年轻人的学术进步是有深远影响的。